Adhoc edit window for normal users

[Crispin Proctor]

Hi Folks,
New vB user (migrated from phpBB) and on a vertical learning curve.

I've been trawling for a while for something like this but cannot find anything.

My users are asking for a way to allow them to be granted a ten minute edit window some time after the normal edit window has expired.
At the moment if a user comes to me or one of the mods with an edit request, we edit it. This is not an issue as the amount it low but some have asked for something where a mode resets the edit window for the original poster.

Is something like possible either natively or with a mod?

Many thanks
Crispin