Find Bottlenek material ( latest date) for materials in delivery group or complete delivery

Hello, 

we person a immense fig of income orders with 100-200 lines successful each order. All lines beryllium to 2-3 transportation groups.

No we were asked to archer Sales which worldly is the bottlenek and what would beryllium the dates erstwhile we exlucde this bottlenk worldly from the group.  Deleting the group, tally ATP and acceptable radical again is nto a bully enactment astir owed to truthful galore differnt bid lines and groups. Any thought however to get this solved ? Getting the info astir each ATP dates for each enactment erstwhile not having the groups ?

thanks Andrea