You do not have sufficient privileges for this resource or its parent to perform this action.Click your browser's Back button to continue.Return to my original pageit is showing if i have enrolled in the ocm module

 am not gettting the client script on incident form it is showing the glide it is showing the  Message "New client-scripts are run in strict mode, with direct DOM access disabled. Access to jQuery, prototype and the window object are likewise disable...

why in users if we adding the  role then instead of one role it is adding mutiple role  

is servicenow devevloper instance will have the impersonate user or the only course will have the impersonate user actually what happens when in the course if we impersonate the user and why it is not having the impersonate user in the developer pdi ...

what is mean by simulator and what is mean by instance