Is it possible to share a dashboard with only certain readers from the UI?
I noticed that I only have the options to enable for everyone in this account.
Yes definitely, What kind of Role or access do you have ? you may check with your Admin as well if its not the case with you.
Use the following procedure to see which users or groups have access to the dashboard.
- Open the published dashboard and choose Share at upper right. Then choose Share dashboard.
- In the Share dashboard page that opens, under Manage permissions, review the users and groups, and their roles and settings.You can search to locate a specific user or group by entering their name or any part of their name in the search box at upper right. Searching is case-sensitive, and wildcards aren’t supported. Delete the search term to return the view to all users.
for more info see - Sharing Amazon QuickSight dashboards - Amazon QuickSight
hope this helps.