The three rules
In the QuickOrder admin, open Quantity rules, pick a product (or several with the resource picker), and set any combination of:
- Minimum — the smallest quantity a buyer can order for this product. Typing less shows an inline hint and rounds up when they leave the field.
- Maximum — a per-order cap, useful for allocations, launches or scarce stock. Typing more rounds down to the cap.
- Increment — the step quantities must follow, e.g. 6 for half-dozen case packs. The quantity field steps by the increment, and typed values snap to the nearest valid multiple.
Rules apply to every variant of the product. A rule with increment 6 and minimum 12 means valid quantities are 12, 18, 24, and so on.
Enforced before the cart. Validation happens in the table itself, before anything is sent to the cart — buyers can't submit an invalid line, so you never have to bounce an order back over a broken case pack.
Worked example
You sell candles in boxes of 6, minimum one box, and you cap big buyers at 20 boxes per order:
| Setting | Value | What the buyer sees |
|---|---|---|
| Increment | 6 | Quantity steps 6 → 12 → 18…; typing 10 snaps to 12 |
| Minimum | 6 | Typing 3 shows "min. 6" and rounds up to 6 |
| Maximum | 120 | Typing 200 shows "max. 120" and rounds down |
How this interacts with Shopify's native B2B rules
If your store is on Shopify Plus and you use native B2B (company catalogs and price lists), Shopify has its own per-variant quantity rules — min, max and increment — defined on the catalog. Two systems could disagree, so QuickOrder applies one simple principle:
Native B2B rules always win. When a logged-in company buyer views the form and their catalog defines a quantity rule for a variant, the table displays and enforces that rule and ignores the app-level rule for the same product. Shopify enforces native rules at checkout anyway — respecting them up front means no surprises after "Add all to cart".
In practice:
- Plus store, native rules defined → the catalog's rules apply for logged-in company buyers; app rules still apply for everyone else (e.g. guest or non-company visitors, if your page is visible to them).
- Plus store, no native rule on a variant → the app rule applies.
- Non-Plus store → app rules are the only rules, and they behave identically.
Good practices
- Match your increments to your physical packaging — buyers understand "by 6" instantly when that's how the carton arrives.
- Prefer product tags like
case-6in your own workflow to keep track of which products carry rules, and review rules seasonally. - Don't set a minimum higher than what a genuine first order looks like — first-time buyers testing your range are still wholesale buyers.
Next step: saved lists & CSV upload — the two features that make re-ordering a 30-second routine.
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