I'm working on assembly and I need to add some feature, custom properties and configuration to one part. I need to use edit in context because orientation of part in assembly is important for use. Adding feature is working but configuration and custom properties are added to assembly file not to part.

If it's imposible perhaps I should open this part separately and perform modifications, but I don't know how to do that and how to remember face selected in assembly context.

Does any one has idea how to do that?