Configuring APM with poolmember (Experimental)

Should be perfectly possible.

You could do this by either performing a Pool Assign in the VPE and differentiate who gets which pool based on whatever logic you like. Or if you just want to use a default pool in LTM, you could just leave the end of your access policy without any assignments and it will make a normal load balancing decision if they pass your authentication/checks etc.

So for your scenario you would have something like....

F5:1 has Virtual Server with Access policy with AD auth step. If AD auth passes, proceed to default pool which contains Virtual Server IP's from F5:2 and F5:3.

Alternatively.... F5:1 has Virtual Server with Access policy with AD auth step. AD Query is then performed. If user is member of GroupA, assign Pool containing VS's from F5:2. If user is member of GroupB, assign Pool containing VS's from F5:3.

This does kind of depend on what your users are actually doing though.