Microsoft Dynamics 365 Interactive Service Hub (ISH) button (on area Settings, subarea Apps) visible for Service Manager, System Administrator, or System Customizer roles (article on Technet ).
How can I make this button visible for other roles?
I have CRM version 8.2 , onpremise.
As referred in the Technet article, those button & link is available only for certain roles by OOB.
But you can use the 3rd option, by referring the direct link for engagementhub.aspx
in sitemap for any roles.