Is there a way to add other "Local" instances?

So, I joined Lemmy.world as it was the biggest instance.

Is there a way that does not include creating another two or three basically pointless accounts to view other instances in the "local" view.

For example: Say that I am Canadian, (I am not, but it works for this example) and I joined the lemmy.ca, but I also want to see what goes on at sh.itjust.works without having to subscribe to every single community in both.