Can we create Manage calendar events based on Legal Employer and Geography

Hi , currently we are using Geography Tree for Manage Calendar Events ..

But as per our client requirement is it possible to create Manage calendar events based on Legal Employer?

I see Hierarchy type where we can create Organization Tree and use in Manage Calendar Events.

Could you please confirm can we use Manage Calendar Events by both Geography tree and as well as Organization Tree?? .

Few calendar events based on Geography Tree and few by Organization Tree?

Thanks for your help in advance..