The feeling of unity and belonging to an environment or society that has comparison to a family away from home is what "Matter Here" also means to me. It is the feeling of being a part of a group that cares about my overall health and well-being, treats me as one of them, supports and guides me to help me become a better person.
The different casted hand-holding gestures are to reiterate the sense of unity and support "Matter Here" means to me as being part of this great community