We do not allow to book less than three tickets. Can we configure this rule?

Open the resource configuration. Create a Tip. Enter the following parameters:

1. Enter a name.

2. Enter the message text.

3. Select the tip type — Error.

4. Open the Constraints tab.

Add a limit on the total number of shares — 2. Then it will be impossible to book one or two tickets. Save it.

The error text is displayed on a red background when you select options and on the cart screen.

But the Place order button in the shopping cart is inactive.

See it in action: