When I click on SCHEDULE, then Events, the "Add an Event" button doesn't appear.
I'm using Google Chrome version 50.0.2661.102, but also tried logging in with Microsoft Edge (on a different PC) - neither browser shows the button.
The administrator of your account has set up all the other users as Read Only users. If you should have the ability to add events, or other data, he would have to change that.
Forwarded that onto the account administrator and after he changed my permissions it now works fine.
Apparently the drummer was on the same permissions as I was but he could add events no problem. Not to worry, all fine now - thanks :)