We encourage our staff to use the time off calendar because it will help our tasks/projects be more accurate but there are 2 issues with the calendar:
1. There is no notice to the Project Owner. As the PM, I think my project is fine until one of my task assignees takes off an extended time. The assignee updates the calendar, which pushes out my project - but I "never" get a notice or alert!
2. As the admin, I have fielded many calls from PM's who cannot figure out why the "system" is not calculating the dates correctly. The PM has already spent a great deal of time trying to determine what is going on. Often I find it is caused by the Time Off Calendar --- the assignee is not in the office during the planned task completion time, so the planned completion date is pushed out.