User Activity

In CMDB Workspace Home page-we need to restrict Important actions, CMDB health, Total CIs widget to CMDB Admin role only.Also In quick links (Create CI, Relationship health dashboard, Unified Map) to cmdb admins only. How we can achieve this ?
In Servicenow CMDB Workspace, we want to restrict CMDB 360, Insights and Management tabs access to CMDB Admins roles only. Also for My work and home tab access should be accessible to CI owners. How this can be achieved ?
Is the CMDB staleness rule is configured OOB for all classes?Where can I modify the staleness duration because in ci class manager its non-editable.Can we set the staleness rule for principal classes only and how?We want to apply condition for stalen...
I am unable to see Data certification module in Servicenow Yokohama version. I have searched it in plugins, but there is no any plugin for data certification. Is this module replaced with the Data manager Certification policy ?
In servicenow knowledge article body want to allow video embedding form sharepoint sites. We change the properties glide.html.enable_media_sites :  youtube.com,player.vimeo.com,vimeo.com to apend sharepoint.com but its still not loading while youtube...
Helpfuls given to