The tiles will reflect customized header settings (color & logo displayed).
On the browser, you'll see icons to indicate whether calendar access is account-based versus shareable link:
Link access will have a link icon next to the calendar link name below the title of the calendar.
Account access will show an avatar next to the user name below the title of the calendar.
Administrator-level access (link-based and account-based) will show a crown icon in the top right corner of the calendar tile.
Note: on the Teamup mobile apps, the user name or the link name will appear under the calendar title both on the calendar dashboard and in the left sidebar.