Powerbi Landing pages

I have a scenario where i am working on the task where i need to create a landing page where this landing page will have 4 types of dashbaords where this will be shared with end users based on roles like students dashbaords,demographics,distric and school,performance dashbaords.so based on user login the dashboards will be shared.

can any one provide samples for creating landing pages and need to insert icons and this icons has to show as per the roles for this kind of scenarios