Timesheet Posting Date

Hi gurus

I have a situation whereby the Process Control settings have stopped the posting of timesheets from last period in that period, even if the period is open from a finance point of view. However, we need need to process these timesheets and post these into the new period.

So my question is how can we change the posting date of a time sheet ? Is this only determined by the day of the timesheet ?

Cheers

Chris