Our organization discovered that users can create from template and essentially use any project, regardless of OBS, in the system.
How can we remove the New from Template button from the projects page?
See a related post
Removing buttons / links from the GUI
and vote for the idea
Requisition object: Ability to remove buttons
This approach may work for you:
Re: Remove Export to Excel and Power Point Icons
Can we disable sorting by users in a Grid portlet?
Specifically, I used those methods to craft this UI Theme CSS entry:
button[onclick*='action=projmgr.selectProjectTemplate'] { display: none; }
Now when I look at the My Projects and Project List portlets (in IE11), I get this (no New From Template buttons):
Thank you! Editing the theme worked perfectly!