How to restrict ITIL user from creating a new dashboard

[Anamika Gupta]

I want to restrict ITIL user from creating new dashboards. 

Below highlighted button should not be visible for ITIL user. How to achieve that?

[angelas]

Were you able to remove ITIL access?  I tried some of the advise below but our ITIL users still saw the 'Create a dashboard' icon and were able to successfully create a pa dashboard.