help with Permission Groups user title

[RazKaziRo]

Hi,

im running VB 4.2.1 version

in my site when users registered they automatically set to "registered users " (default option) - group with no user title- i set it without user title

users have option to apply for another groups - in the Permission Groups area lets say to group A and group B

group A has a title - "User In Group A"
group B has user title - "User In group B"

when user choose group A permissions and accepted for this group his user Title wont change and he need to do another step in the Permission Groups
"Identify me as a member of this group" for the title change

there is any way to set that when users choose Permission Group the user title change automatically to the group they accepted for?

thanks for the help

Raz