Average Entry Price

Simple answer is - NT8 can’t.
FWIW/FYI IMHO I’d ‘move on’ & accept it is what it is.
NT8 took a step backwards wrt this sort of stuff, ‘Group’ trades etc.
Several ppl have tried to make progress, unsuccessfully (many hrs expended). Problems seem to be around querying sql database, & matching/pairing executions in and out.
NT seem to have no appetite
Best,