Product limits cap how many of each choice a form can sell, like 5 kids per swim lesson time. When a choice fills up, it disappears from the form automatically.
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Limit spots for each choice
Go to Content > Gravity Forms and open your form.
Drag a Product field onto the form and give it a name, like "Lesson Time."
Set the field type to Drop Down (or Radio Buttons) and click Edit Choices.
Add each choice and its price.
Check the box to enable limits, then enter the limit for each choice (for example, 5).
Click Save Form.
💡 Test it. Set a limit of 1 on a test choice, submit once, and check that the choice disappears. Then set the real limit.