User in multiple groups with different login time

Hi, I am trying to assign one user to multiple groups and each group has a different login time. Is it possible to check the user against each group's login time and allow access if anyone of them matches. I tried using DEFAULT and matching GROUP-NAME in users file with fall-through option. But  the last matching entry overwrites the Login-time to its value. Is there a way that we can concatenate Login time values from all matching entries or is there any other way we can achieve this? Thanks, Pramada