I was looking at this last week too. and chanced upon this thread, perhaps it's clearer for you? I also read somewhere subsidized route no single room, single room will be private rate.
https://community.theasianparent.com/q/im-currently-under-kkh-subsidised-but-hubs-i-thinking-going-ward-during-d/729083?d=android&ct=q&share=true