Go to the Dashboard and click on Sitemap.

In the Sitemap, tick the checkbox Show System Pages to display the Dashboard pages in the Sitemap.

Select the Dashboard page and click on Set Permissions.

Tick the checkbox for Editors in the upper part, Who can view this page?

Click on Save.

concrete5 has inherited new permissions for all sub pages of the dashboard page. This means that we are granted access to every item in the dashboard, which is exactly what we didn't want to do. While the inheritance is usually quite handy if you want to change the permissions, in this case it leads to a few more clicks. We have to revoke the rights from all the dashboard sub pages that we don't want the editors to have access to.

Expand the dashboard page by clicking on the small plus icon in front of the page name.

Expand the Sitemap as well.

Click on the subpage Access and click on Set Permissions.

Uncheck the checkbox for Editors in the Who can view this page...