Is there any way to organize or group schemas inside an instance?

I'm looking for a way to organize in TOAD multiple schemas from one instance.

I've been told to use Project Manager in TOAD. However, what I find is that, using Project, I can add an INSTANCE, not schemas. Inside project node, I can add database obetcs, like tables from any schema, but I don't see how to group schemas or add schemas in a project.

Am I missing something?