How can I install EPC9192KIT into a chassis

I got EPC9192KIT about several days ago. Now I want to install it and the power module, and the volume controller board into a chassis. But there is only two Plating Through Holes on EPC9192KIT. It’s not steady while fixing by two holes…

We got your request. Thanks. The current design only has two holes. Maybe we can improve in the next version.

This is a design issue. Issues MUST be fixed but MAYBE.