add user to local aaa authentication group

[lohelle]

I have two aaa authentication ppp local groups:

aaa authentication ppp default local
aaa authentication ppp company1 local

Is there a possibility to add certain users to the default group and others to the company1 group??

I'm trying to create two or more vpdn-groups for external pptp access to our network.. But we need to create separate ip pools for different users.. is this possible when using a local aaa database??

Please help!