TAdvDbGrid, inplace edit, db post

Hi !
I have a dbGrid with inplace editing allowed (also dbNavigator connected to the datasource). Is it possible to configure the grid so that posting the edited row could happen only once (and not every time a single column is edited) when the user exits the row or posts it using navigator ? Have not found any options for this.
This is because the db dataset has a trigger, which I would like to fire only once.

set grid.EditPostmode := epRow