Only owner can modify the work item using CLM 5.0.2
One answer
As far as I can tell, this can only be achieved by an advisor. Here is an example: https://rsjazz.wordpress.com/2014/05/26/only-owner-can-close-workitem-advisor/
Comments
Hi Ralph,
I need to restrict modification to a work item only by the owner or a team leader role
Thanks
There are plenty of examples how to get the role of a user. Consider searching the blog.
Another possible approach would be using a condition and make the attributes read only by it. See https://rsjazz.wordpress.com/2015/06/19/a-custom-condition-to-make-attributes-required-or-read-only-by-role/