Hello Christen, it is possible, but requires modifications within the plugin's source code.
Check Daisy's reply from here:
www.oxwall.org/forum/topic/17368?page=1#post-88302 :
"We do realize that such plugins like Groups, Forum, Videos, etc are very
important to the communities, but guys, this was the first stage only
and we are not going to stop development, but it requires time to
implement all the plugins to the mobile version. Since these plugins are
already scheduled for next stages and third-party developers are
working on their own plugins - we are expecting that all plugins will be
added sooner or later.
However, if you do not want to wait till Oxwall team implements these
plugins, you can do that by yourself or apply to developers who can do
that. However, remember, it's not so easy to add the button - this
requires the complete mobile plugin development. "