There are many ways you can get actively involved with the IMRA including:

You may become a  member of IMRA.
You may become a volunteer of IMRA.
You may become a Reviewer for IMRA. Click on http://www.imraweb.org/guidelines-forms  for more details..
You are cordially invited to submit a proposal to chair or lead a specific Workshop / Research Round Tables / Special Sessions for the conference that you may wish to lead / chair. Kindly refer to the following web page: http://www.imraweb.org/guidelines-forms