join requests as primary group

[bartek24m]

How to anable my users in 3.8.5 join themseves to specific groups as PRIMARY and not seccondary.
In this area:
mydomain.com/profile.php?do=editusergroups

if youser request join a new group they are add up as seccondary :(

is there any solution ?


Greatz !

[Marco van Herwaarden]

What is your goal by making them join as a primary group?

[bartek24m]

they pay for join to special group 'donators'

Group 'donators' has grand access to specific forum.

i use usual vbulletin 'join request for it.