We're reinstalling a Hunter Douglas Cassette roller shade with a B chain.
You're going to want to get eye-level with it, and you're going to start with this front tab. By placing it on this ridge of the blind on both sides.
And then you're just going to simply rotate back until you hear them snap in.
The last step is to remount your tensioner. So you have a screw inside of there that needs to go in there. So we have to pull down slightly on the string, line everything up, and then tighten your screw.