Is it possible to add an additional play mode?

Dear Community,

I’m currently working on a plugin and I want to add a feature which should only be played in standalone mode but the feature should be optional, so I think it would be the easiet way to add an additional play mode where this feature get called and which is simular to the standalone mode. Is it possible to add an additional play mode without customize the ue4 engine code? If it is, how can I add an customized playmode? I didn’t find anything to it in the internet.

Thanks for reading.