I think the use case you describe is that you create a Google account as yourself, along with each of your colleagues. Then you create a G+ Page and make them

I think the use case you describe is that you create a Google account as yourself, along with each of your colleagues. Then you create a G+ Page and make them all administrators of it. You can act/post/etc. as the G+ page and not as yourself, e.g. https://plus.google.com/+TheCorcoranGroup https://plus.google.com/+TheCorcoranGroup Not saying this is ideal or that you should like it, just that I think that's how you can do what you want to do.