Ultimate Catalyst Guide

How do I support multiple windows?

Initially, this is rather simple. You just need to enable the Supports multiple windows setting for your target:

After this, if you didn't create your own MenuBar, you will have a new New Window Control + N shortcut that you can use to instantiate a new window.

If you did modify your menubar (as explained above) you can re-create the New Window shortcut by following these explanations.

Finally, if you want to support multiple different windows, that is explained here