Hi,
i believe this would require a custom development effort to be notify PMs about timesheet over-allocation, since it cant be done through OOB options available.
you may write a event handler related to timesheet submission event, and perform your required action based on overallocation such as notifying PM through email about over-allocation OR stop user to submit time-sheet for approval unless user discusses this
situation with PM first to seek PM's consent.
In order to know about Project Server event handlers, please see the below link: (these msdn article are not specifically for 2013 version, but concept is still applies to 2010/2013 PS versions)
http://msdn.microsoft.com/en-us/library/gg615466(v=office.14).aspx
http://msdn.microsoft.com/en-us/library/office/ms469450(v=office.12).aspx
And in order to know exactly about the PS2013 class libraries and web service references, please see the below msdn article:
http://msdn.microsoft.com/en-us/library/office/ee767707.aspx
hope this helps.
Khurram Jamshed - MBA, PMP, MCTS, MCITP (
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