Developing with multiple Arduinos on same PC

I have a Leonardo and an Uno and want to develop with each of them attached to a single PC at the same time. When I set the board type for the Uno then go back to the Leo's environment, it has switched to Uno also. Is there a way to stop this from happening?

Open another instance of the IDE, I've had 2 open at a time, each with a different board selected.

Oddly enough, I never tried that. Don't know why exactly. :~ I guess it was because I assumed a single IDE should do this but since multiple IDEs seem to handle it (I tried it and it works) then all is good. Thanks for the response!

Glad to help.