The iCloud account of slideshow@pomfret.org needs to be logged in on the AppleTV. We will set this up by default, but it's possible that someone logs in with a different account and it will need to be changed.
Please contact IT for the password if you need it.
On the Apple TV menu, select Photos
Once in the Photos app, go to Albums
Select the Album you're interested in showing (ie. Alumni, Admissions, etc.)
In the album, choose "Play Slideshow"
You will then have the ability to change some options (ie. shuffle photos, repeat photos, theme, time per slide, transition) - afterwards select "Start Slideshow"