${_('Chosen group members')}
${h.select('users_group_members',[],c.group_members,multiple=True,size=8,style="width:210px",class_='form-control')}
${_('Available members')}
${h.select('available_members',[],c.available_members,multiple=True,size=8,style="width:210px",class_='form-control')}