How do you "knit on" to another piece?

I’m so glad to find a place to ask this question. I’ve had two patterns now that said to “knit on” a certain number of stitches for an edging. I can’t find any information anywhere that tells how to do that. Can you please enlighten me? Thank you so much.


There ya go!

Thank you so much for the video help!! I was doing it pretty well for just guessing last time.

Many thanks,