See how to add Zones from your Board:
1 - Click on the "zone" button at the bottom left
2 - Then click on the "zone" button and select the zone to be delimited according to your needs
3 - Customize your "zone"
You can name, move, lock, delete and duplicate your zones, as well as share the access link from the context menu.
To resize your zones evenly, hold down the "shift" key on your keyboard. You can also choose from 3 predefined zone formats for greater consistency.