Walk into any large retail store and you will find thousands of items neatly arranged. Behind that order lies a question every retailer must answer: who decides what to buy, and how is the responsibility split? A single shop owner might handle everything alone, but a department store carrying tens of thousands of products cannot. This is where organised buying comes in, built around the idea of grouping merchandise into categories and assigning clear ownership for each. The National Retail Federation developed a standard chart that maps these categories to the people who manage them, and it remains a useful reference for understanding how buying organisations are structured.
Table of Contents
- Why buying must be organised by categories
- The merchandise hierarchy: from group to SKU
- The main levels explained
- The NRF standard chart and the people behind each category
- General Merchandise Manager (GMM)
- Divisional Merchandise Manager (DMM)
- Buyer
- Assistant buyer, planner and allocator
- How the chart works for an apparel store
- Why this structure scales
- From buying structure to better decisions
Why buying must be organised by categories
Every retailer, from a neighbourhood store to a large chain, deals with the same basic challenge. There are simply too many products to manage as one undivided mass. A mid-sized apparel store may stock shirts, trousers, ethnic wear, footwear, accessories and innerwear, each available in multiple brands, sizes and colours. Trying to track all of this without a system would lead to overstocking some items, running out of others, and losing control over costs.
The solution is to break merchandise into manageable groups called categories. A category is a collection of related products that customers see as similar or substitutable, such as men’s formal shirts or women’s handbags. Once merchandise is divided this way, each group can be planned, purchased and reviewed on its own. Even a retailer with only one buyer, who may also be the owner, needs this structure to keep the buying process orderly.
This idea sits at the heart of category management, where each category is treated almost like a separate business with its own profit and loss. The retailer does not just promote a single brand; it manages the performance of the whole category. This approach also strengthens the relationship between the retailer and its suppliers, since both sides work together to improve how a category performs.
The merchandise hierarchy: from group to SKU
Before looking at who does what, it helps to understand how merchandise itself is layered. Retailers organise products into a hierarchy, moving from the broadest grouping down to the single item on the shelf. Industry practice usually recognises several levels: group, division, department, classification, category and SKU.
The main levels explained
Merchandise group: The highest level, grouping broad areas of business. A department store may have groups such as women’s apparel; men’s, children’s and intimate apparel; cosmetics, footwear and accessories; and home and kitchen.
Department: The next level down. Within men’s apparel, for example, there may be separate departments for formal wear, sportswear and innerwear.
Classification: A grouping of items aimed at the same type of customer, such as boys’ sizes within children’s wear.
Category: A further breakdown into related products that a buyer actually purchases. A buyer of ladies’ suits, for instance, may handle formal, casual, western and party-wear suits as separate categories.
SKU: The Stock Keeping Unit is the final and most specific level. As explained in retail merchandising, an SKU is a unique number assigned by the retailer, not the manufacturer, to each distinct item. A red cotton shirt in size 40 carries a different SKU from the same shirt in size 42.
Every retailer designs its own version of this hierarchy, but the logic stays the same: organise from the general to the specific so that responsibility can be assigned clearly at each level.
The NRF standard chart and the people behind each category
The value of the NRF standard chart is that it does two things at once. It lays out the merchandise categories, and it shows the standard job titles of the people who handle them. This pairing turns an abstract hierarchy into a working organisation chart. The structure described below is illustrative, and real retailers adapt it to their own size and needs.
General Merchandise Manager (GMM)
At the top of the buying organisation sits the General Merchandise Manager. The GMM heads the entire merchandising division and is often a senior vice president in large firms. As described by retail educators, the GMM sets the overall merchandise strategy and direction, develops buying and selling plans that maximise profitability, and leads the buyers across all divisions. This role usually demands many years of buying experience and a strong sense for numbers.
Divisional Merchandise Manager (DMM)
Below the GMM are the Divisional Merchandise Managers. Each DMM leads the buyers for a related group of products, such as all of menswear or all of womenswear. The DMM sets strategy for that division, keeps profits up by maximising sales and minimising markdowns, and studies competitors, trends and markets. The DMM is also responsible for resolving issues that buyers escalate and for aligning the division’s promotions with the wider marketing plan.
Buyer
The buyer is the person closest to the actual purchasing. Each buyer manages one or more categories and works with several vendors within those categories. A buyer handling men’s casual wear, for example, may deal with multiple suppliers of t-shirts, jeans and casual shirts. Merchandise buying involves sourcing goods from vendors at the best possible cost, attending trade shows to select products, conducting line reviews, and managing the business through the season as actual sales differ from the plan.
Assistant buyer, planner and allocator
Supporting these roles are assistant buyers, planners and allocators. In many retailers the buying task is split between a buyer or category manager and a merchandise planner. The planner works alongside the buying team to set inventory levels and tailor the assortment across categories. In a country as varied as India, this matters a great deal. A planner at a national chain may adjust the sweater assortment so that colder northern regions receive heavier stock than warmer southern ones, as retail management literature notes. The allocator then ensures the right quantities reach the right stores.
How the chart works for an apparel store
Putting the pieces together, picture a mid-sized apparel retailer. The merchandise is first split into broad groups such as menswear, womenswear, and kids and accessories. Each group falls under a divisional merchandise manager. Within menswear, the DMM oversees buyers for formal wear, casual wear and ethnic wear. The casual wear buyer, in turn, handles categories like t-shirts, jeans and casual shirts, and within each category works with several competing vendors to get the best product at the best price.
This layered design means that a decision about a single product, say a particular style of jeans, can be traced upward through a clear chain. The buyer selects it, the DMM approves the broader strategy it fits into, and the GMM ensures it aligns with the store’s overall direction. At the same time, responsibility flows downward: each level answers for the performance of everything beneath it.
Why this structure scales
The real strength of the NRF model is that it grows with the retailer. A small store may collapse several of these roles into one person, often the owner, who acts as GMM, DMM and buyer all at once. As the business expands and the number of SKUs climbs into the thousands, the need to assign dedicated managers to each category becomes unavoidable. Category management practice notes that once a retailer is handling thousands of SKUs across many departments, appointing a category manager responsible for each category’s performance and return on investment becomes essential.
This is why the same basic chart applies whether you are looking at a single boutique or a large chain. Only the number of people filling the boxes changes. The logic of dividing merchandise into categories and giving each one an owner stays constant.
From buying structure to better decisions
An organised buying structure is not just about tidiness. It directly improves decisions. When each category has a clear owner, that person can study the sales data for their products, understand what customers in their segment want, negotiate sharper deals with vendors, and react quickly when a line sells faster or slower than expected. Treating each category as its own business unit, with its own profit and loss, sharpens accountability in a way that a single undivided buying function never could.
It also clarifies careers for those entering retail. The path from assistant buyer to buyer, then to divisional merchandise manager and eventually general merchandise manager, is a recognised ladder. Each rung carries wider responsibility, from managing a few categories to setting strategy for an entire division and finally for the whole merchandise division. The NRF chart, by naming these roles and linking them to categories, gives both retailers and newcomers a shared map of how the buying organisation fits together.
What do you think? If you were setting up the buying organisation for a growing Indian apparel chain, at which point would you stop combining roles in one person and start appointing dedicated category buyers? And how might the rise of online retail, with its huge number of SKUs, change the way these traditional buying roles are defined?
References
- https://en.wikipedia.org/wiki/National_Retail_Federation
- https://www.managementstudyguide.com/category-management.htm
- https://courses.lumenlearning.com/wm-retailmanagement/chapter/putting-it-together-merchandise-management-2/
- https://study.com/academy/lesson/merchandise-management-in-retail-definition-components-categories.html
- https://twu.edu/fashion/career-outlook/careers-in-retail-merchandising/
- https://courses.lumenlearning.com/wm-retailmanagement/chapter/inside-retail-buying-organizations/
- https://www.yourarticlelibrary.com/retail-management/buying-organization-structure-with-diagram/48184
- https://www.retaildogma.com/category-management/
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