Joomal RSMembership Overrides

Need some overrides made to RSMembership to change layouts into steps and to change some minor functionality. Must have Joomla extension development experience. If you send me a list of sites you built your proposal won't even get looked at. I want to see extensions you've worked on as a developer, not sites you built as a site builder. We have some mockups of how it needs to look/function/flow and can provide those on request.