This article will show you how to set Calendar permissions at the category level.
Who can use this feature?
System Administrator | Owner
Instructions
Navigate to Modules and, on the Content tab, select Calendar:

Select your category:

Click the Actions button for the category:

Select Modify:

Scroll to Permissions and check or uncheck the appropriate permissions for groups:

V (View): Only has viewing rights
A (Author): Can create and edit unpublished items. Needs publishing from a Publisher or Owner
P (Publisher): Can create and edit items. Has publishing power
O (Owner): Full rights to the category
Click the Save Changes button:
