Tip of the Week #5: To begin with, only users with “admin” and “power user” roles have the permission to approve the vacation.
How to do that?
Once your team member has created the vacation event, it would appear on the timeline.
To approve it, simply click on a grey icon on a vacation event and click “approve”.
N.B. To change the planned start/end date, assignee or delete the vacation, you should unapprove it first.