Breaks and blocks can be set for each calendar for a single time and date or recurring days and times. This is used for lunch, meetings, and vacation. Block will not allow any appointment at this time slot(s) and break will allow appointment at this time slot. Click on the day and time and select Break or Block, then this screen appears:

Select the facility, then the provider or calendar name. Set the begin and end time. Click Recurrence if this break is to be repeated to future days. To edit an existing break, click edit on the break listed below.  To delete the break, click delete. When done, click Save.