1. Set default DNG Module View? 2. Inhibit user change to DNG Module View that is Shared View?
Accepted answer
1) You can mark a certain module view as a preferred view (there is a checkbox)
https://www.ibm.com/support/knowledgecenter/SSYMRC_6.0.6/com.ibm.rational.rrm.help.doc/topics/c_filter_views_modules.html
2) There is a permission for "Save Shared View" > "Modify" that you can set for user roles.