How can I Promote a calendar to a higher level ?

Oracle Product : Oracle Primavera Cloud

As I attempt to move a project from one workspace to another I receive an error with this content:

"You cannot move a project to a different Workspaces because the calendar is not accessible in the target Workspaces. Promote the calendar to a higher level and pull it down into the target Workspaces."

I don't know how to promote a calendar to a higher level in Oracle Primavera Cloud.

here is a screen shot of the error:

Thanks,