[kh99]

It depends on the chat plugin. I've seen at least one with that option built in. But even if it's not, you could probably edit the plugin(s) and surround the code with

PHP Code:

if (is_member_of($vbulletin->userinfo, 5, 6, 7))
{
   // chat code here
} 


where you'd change 5, 6, 7 to the list of usergroups you want to have access.


Another way might be if the mod already has an option to enable/disable it from the adminCP, you could create a plugin using hook location global_bootstrap_init_start and code like:

PHP Code:

if (!is_member_of($vbulletin->userinfo, 5, 6, 7))
    $vbulletin->options[option_name] = 0; 


where option_name is the actual name of the option (You can probably figure this out by looking at the existing plugin).

Anyway, I hope this helps.