You can group them into one space (presumably Volunteer/Not Medical Clinical, if that is true of all of them), name the space something like "Short-Term Community Volunteering" (or something similar that is inclusive of all of them), list the most recent or the most substantive first and use that information for most of the header information, ie Organization, Location, and Contact. List the others below that in the narrative space, giving similar information. For each, include the hours and dates of involvement. In the Total Hours space, add all the hours together. This approach won't give you much space for explanation, but as PreMedStudent55555 said, it will look more substantial.