You can limit the number of cards a participant can sort into each category in a Card Sort block.

To add a maximum number of cards to a category:
- Open a card sort block on a draft maze.
- Open the Categories editor.
- When adding or editing categories, click the toggle Limit number of cards per category.
- This will reveal a field where you can adjust the card limit for each category. Leave that field blank (zero) to allow users to add unlimited cards to that specific category.
- To save, click Done.