How to auto assign different theme to a particular user group

[sabug]

hi all, 
I'm using google ads in my forum. I've created an user group named prime members. and added some users to that group. i want  premium users automatically get another theme which I created without adsense script . basically i want to give my premium users an ads free experience. please help.

[.m.]

at the theme properties you can select allowed user groups.
[i.e. through themes section at forum admin panel]

so for the theme without advt - select premium users group
for the other theme - select the other user groups [related image]

however it would be better to use a advt plugin targeted to user groups
eg. My Advertisements plugin
so a single theme can be configured with advt for specific groups

[sabug]

at the theme properties you can select allowed user groups.
[i.e. through themes section at forum admin panel]

so for the theme without advt - select premium users group
for the other theme - select the other user groups [related image]

however it would be better to use a advt plugin targeted to user groups
eg. My Advertisements plugin
so a single theme can be configured with advt for specific groups

  Actually i've tried this method .but still its loading default theme for prime user group

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[.m.]

make sure that your prime user group should have access only to specific theme