Place it just after a door knock to show someone has arrived, then follow with a bell ding to confirm the moment. That knock, ring and ding sequence works well at the start of a skit or a reaction clip before any dialogue begins.
About this sound
This is a short ringing sound lasting just over two seconds, built around a simple bell-like ring. It feels sharp and attention-grabbing, the kind of tone that makes people look up and listen straight away, whether it marks a moment or simply breaks the quiet.