If you want to unblock seats that you previously blocked in a class/course/workshop/tour:
1. Go to your Calendar
2. Select the date when the class/course/workshop/tour runs
3. Click on the class/course/workshop/tour to open it
4. Go to the Quick Blocks tab and click on the blocked seats [1]
5. A pop-up window will open, showing the blocked seats. Click on the Delete [2] button
6. Bookeo will ask you if you are sure that you want to delete the quick block. Click on the Yes, delete button