How the timeline is planned: building and reading a domestic restocking timeline

Planning a restocking timeline is not guesswork; it is one calculation done in the right order

Every order has a date the goods must reach the shop. Working backward from that date to "can we actually make this" is the job of a timeline. This lesson is for anyone who has to promise a delivery date, or check whether someone else's promise is realistic: a merchandiser, a factory planner, a shop owner planning restocks against a forecast, or a student learning the trade. When a merchandiser does not know how to build a timeline, one of two things goes wrong: the promised date is too optimistic, because the stages were added up wrong, or a real delay is missed until it is too late to fix, because nobody was watching the one part of the timeline that could not slip. This lesson teaches you to build the timeline correctly and to see a delay coming before it becomes a late shipment or a late restock.

You need: nothing but this page. You do not need to know how a factory schedules its machines or how a delivery truck sets its road schedule.

By the end of this lesson you can:

• explain the difference between a stage that must happen one after another and a stage that can happen at the same time as another;
• add up Cedar & Co.'s 12-week domestic timeline stage by stage and say why the total is a simple sum;
• say what happens to the whole timeline when one stage overruns, and why some stages are more dangerous to lose time in than others;
• use a buffer, and know which stages most need one;
• decide, when a restock date is at risk, whether to pay extra for faster delivery or accept the delay, and say whose decision that is.

Not covered here: how a price is built (lesson 1.3), who owns the goods at each stage (lesson 1.2), and how a shipping document is checked line by line for an export order (a later lesson).

Words you will meet in this lesson

The total timeline is the sum of the sequential stages, not of every stage

An order's total lead time is the sum of every sequential stage — every stage that must happen one after another because each one needs the one before it to finish first. Stages that can happen at the same time, the parallel stages, are not added to that sum; they run alongside a sequential stage and only matter if one of them takes longer than the sequential work it sits beside. Planning a timeline means knowing which stages are which. Add every stage together as if they were all sequential, and you will quote a delivery date far later than the order needs. Assume everything can overlap, and you will quote a date the order cannot actually meet.

The same order can be planned well or badly, depending on four things a merchandiser must check

Cedar & Co.'s 12-week domestic timeline: four sequential stages, one after another

Cedar & Co. is a local brand with 12 shops. It runs Make to Stock: it buys from Delta Garments against its own sales forecast, not against a single confirmed export buyer, and pays Delta Garments on 60-day open account. Because the goods travel from Delta Garments' factory straight to Cedar & Co.'s own warehouse and shops by road, this timeline skips the whole ocean-shipping leg that Order A's export timeline needs: no port cut-off, no sailing day, no customs clearance. Starting from Order A's stage breakdown (approvals 2 weeks, fabric 5 weeks, sewing 2 weeks, inspection and documents 1 week, shipping 4 weeks, warehouse 2 weeks — 16 weeks total), remove the 4 weeks that exist only because Order A crosses the sea: 16 minus 4 leaves 12 weeks for a domestic order that still needs its own local delivery and shop-restocking stage.

Because every stage here depends on the one before it, there is no shortcut: the total time is the sum of all five, and it repeats every restocking cycle rather than ending with one buyer's single shipment.

Adding the five sequential stages gives 12 weeks; a delay at the start adds directly to the total

Now see what happens if approvals overrun by 2 weeks — a very common real event — and nothing else changes:

The whole restocking cycle is now 2 weeks late, because approvals sits at the very start of a sequential chain: every week lost there is a week added to every stage that follows it.

Four steps to plan or check any timeline

1. List every stage the order must pass through. Do not skip a stage because it seems small; the inspection and packing stage is only one week in Cedar & Co.'s order, but a truck cannot be loaded without it.
2. Mark which stages must be sequential and which could run in parallel. Ask, for each stage, "does this need the stage before it to be finished first?" If yes, it is sequential. If no, and it can be worked on at the same time, it is parallel.
3. Add up only the sequential path. This is the critical path: the shortest possible total time the order can take. Parallel stages do not add to this total unless one of them runs longer than the sequential work beside it.
4. Add a buffer for the stages most likely to slip. Approvals and fabric are the most common culprits, because they depend on someone outside the factory's direct control: the buyer for approvals, and the fabric mill for fabric.

Treating approvals as "not really part of production" and leaving it with no buffer

A common mistake is to treat the approvals stage as paperwork that sits before "the real work" starts, and therefore not worth protecting with a buffer. This is exactly backward. Because approvals sits first in a sequential chain, any days lost there are not recoverable later without compressing something else — often delivery, at extra cost — or restocking the shops late. The earlier a delay happens in a sequential chain, the more of the timeline it can damage, because every later stage is still waiting on it.

• Add up sequential stages. Do not add stages that can run at the same time; count only the longest of them.
• A delay on a sequential stage near the start of the chain costs the whole order the same number of weeks, because everything after it waits.
• Trims can usually be sourced in parallel with fabric. Fabric, sewing and delivery cannot be reordered; each needs the one before it finished.
• Build in a few days or weeks of buffer, especially around approvals and fabric — the two stages most often delayed by someone outside the factory.
• If time is lost, look at delivery method before production speed. A faster truck slot can often recover days a factory cannot.
• Cedar & Co. arranges and pays for its own delivery, so paying extra for a faster slot to protect a restock date is Cedar & Co.'s decision, not Delta Garments'.

Omar takes 4 weeks to approve the pre-production sample instead of the planned 2, and the booked delivery slot can no longer be caught

Delta Garments is sewing Cedar & Co.'s current restocking order, on the 12-week domestic timeline. Approvals were planned to take 2 weeks. Omar, Cedar & Co.'s owner, actually takes 4 weeks to approve the pre-production sample — a 2-week overrun at the start, and a very common real event. By the time approvals finish, the standard delivery slot Delta Garments originally booked, in week 10, can no longer be caught.

The document Delta Garments' merchandiser now reads is the delivery scheduler's booking sheet:

You are the merchandiser at Delta Garments. Should Cedar & Co. absorb the full 2-week delay on the original standard delivery slot, or pay for a priority delivery slot to recover time? And whose decision is it, given that Cedar & Co. buys on open account and arranges its own delivery? Decide before opening the answer.

Timeline breakdown sheet: fill this in for every new order

Copy this table into your order file. List every stage the order must pass through, mark whether each one is sequential or could run in parallel with another, and add up only the sequential path to get the critical path total.

Download the Order Shape sheet (Excel)

Lesson 2.1: The main types of companies in the apparel and textile industry

This is the last lesson of Course 1. You can now name the ten stages, say who owns the goods, see how a price is built, know who carries the risk, and build a timeline. Course 2 moves from the process view to the company view: the main types of companies you'll meet. Back to the course map