Barre (chord) and (possibly) Hammer-On.
In the photo the index finger is holding down G and B strings. The ring finger is also fretting the G string.
The index is making a barre across two strings.
The ring is fretting on the G as well ... and would be removed and replaced perhaps with the index in place. If repeated that could be a hammer-on (and off).
"In music, a barre chord (also known as bar chord or rarely barr chord) is a type of chord on a guitar or other stringed instrument, that the musician plays by using one or more fingers to press down multiple strings across a single fret of the fingerboard (like a bar pressing down the strings)."