Blocking or unblocking a time slot or booking a misc slot in the Field team schedule is similar to doing so in the system. Have a look at the following steps.
1. Go to the Field resources section.
2. Select a field team member you want to block or unblock slots.
3. Click Options > View.
4. Click the top right burger icon & select the Block/unblock slots option.
5. Then tick the tickboxes to unlock & untick the tickboxes to block the slot.