# Product Page Behaviour

> Source: https://primemoq.app/help/settings/product-page-behaviour
> Collection: Settings
> Updated: 2026-08-26

Four toggles that decide how early and how firmly a shopper is warned about a limit on the product page, before they ever reach checkout.

**Short answer.** Settings > Product page behaviour has four independent toggles, whether product-level limit messages show, whether cart-level value and weight messages also show on the product page, whether Add to cart is disabled until the minimum is met, and whether the quantity field starts at the rule's minimum. None of them decide whether checkout blocks an invalid order. That enforcement runs regardless of every toggle here.

## Key takeaways

- These toggles control early warnings only, never enforcement.
- Disabling Add to cart is the clearest early signal, and the button re-enables the moment the quantity becomes valid.
- Starting the quantity at the minimum suits single-variant products better than large variant sets.
- Turning everything off does not switch a rule off. It only removes the warning.

## Before you start

- The Prime MOQ app embed enabled in your theme, since product page messages are rendered by it.

## The four toggles

| Toggle | What it does |
| --- | --- |
| Show rule messages on product page | Product-level limits warn through the app embed before the shopper reaches the cart |
| Show cart-rule messages on product page | Cart-level limits, meaning order value and weight, also warn on the product page |
| Disable Add to cart when the minimum is not met | The button greys out below the minimum and re-enables as soon as the quantity is valid |
| Start quantity at product minimum | The quantity input opens at the rule's minimum instead of 1 |

Each one is independent. Turning off the first does not turn off the others.

## What they do not do

None of these toggles decide whether an order is actually blocked. Enforcement
happens in the Shopify Function at checkout, and it runs whatever this section
says. See
[How limits are enforced at checkout](https://primemoq.app/help/checkout-and-enforcement/how-limits-are-enforced-at-checkout).

The practical effect of turning everything off is a shopper who is not warned on
the product page, not a shopper who can suddenly buy 3 units of a 6-unit
minimum. They fill a cart and get stopped later, which is a worse experience
rather than a looser rule.

## Choosing settings

**Leave Add to cart disabling on for most stores.** It is the earliest and
clearest signal a shopper gets, and it costs nothing: the button comes back the
instant the quantity is valid.

**Use "start quantity at product minimum" on single-variant products.** On a
product with a large variant set, opening at a minimum can pre-fill a quantity
against a variant the shopper had not chosen yet. If you would rather they read
the warning and set the number themselves, leave it off.

**Turn on cart-rule messages** when your value or weight rules are the ones
shoppers hit most, so a freight ceiling shows up before the cart page rather
than at it.

## Common mistakes

- Turning every toggle off to pause a rule. That is not what this section
does. To stop a rule enforcing, change its status on the rule itself, described
in Rule statuses.

- Expecting product page messages with no app embed. The messages are drawn
by the app embed. If it is off, nothing renders regardless of these toggles.
See Activate the app embed.

- Assuming the cart drawer follows this section. The cart-rule toggle
surfaces value and weight warnings on the product page. What shows inside the
drawer is a separate matter.

## FAQ

### If I turn off "disable Add to cart", does the rule stop enforcing?

No. Checkout enforcement is completely independent of this section. The button simply no longer greys out early, and an invalid order is still stopped at checkout.

### Does this section change what shows inside the cart drawer?

No. The cart-rule toggle puts value and weight warnings on the product page itself. The cart drawer has its own behaviour and is not governed here.

### Why is the quantity field already showing 6 when the page loads?

Because "start quantity at product minimum" is on and a rule sets a minimum of 6 for that product. Turn the toggle off if you would rather it opened at 1.

### Do these toggles apply to every rule or can I set them per rule?

They are shop-wide. Every rule uses the same product page behaviour, so there is one place to change it rather than a copy of these four settings inside each rule.

**Best for:** Tuning how much warning a shopper gets on the product page, without changing what happens at checkout.

**Applies to:** All plans