I use the hosted service of Confluence and should have Administrator privileges (I am member of the administrators group and can open Confluence Admin), but there is no User Macro section. Is this feature not available in the hosted service? Is there any way to access this feature?
Sadly, user macros are not available in the On-Demand version. On the below link on the right side of the page you will see an info box that says "The information on this page does not apply to Confluence OnDemand."
Here is a more full list of what is and is not supported in the On-Demand version.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event