Creating resource calendar exceptions in Microsoft Project Online is absolutely necessary in order for your project to calculate an accurate timeline. Vacation, training, seminars, and the like are time away from project work that must be accounted for in a resource calendar, otherwise project work will be scheduled when it otherwise should not, causing the project finish date to be innacurate. Understanding the options for creating resource calendars is imperitive in project management. Attend this short “How To” video and we'll show you how.
Either done via the project manager of the resource, calendar exceptions will effectively block project work from occurring on days and times in which team members are unavailable for project work. In the case of this short video, vacation or some similar activity. After these exceptions are created, when the resource calendar is evaulated the project will see a team member cannot work on a specify day or days, and therefore avoid scheduling work on non-working days. This helps the project manager create a realistic critical path from which to manage and track their project.