Add search by JomSocial Group within PayPlans for Joomla - repost

Add search by JomSocial Group within PayPlans for Joomla. I am using PayPlans, JomSocial and Joomla. Within PayPlans there is a section (please consult attachment) where one can search users by different ways. In there I would need to be able to search users by JomSocial Groups (which have already been defined within JomSocial). A PayPlans App needs to be written and I believe the following needs to be considered for that: [login to view URL] Open to suggestions how this could be solved and how best to proceed!