If you go 20 sec back, he shows you how to make them.
Oh no I know how to creat an or gate with 3 pins. My question is how to integrate my OR3 and OR4 with the original OR gate like the following screen.
I'm sorry about my bad english, it's not my first language.
Oh I did not know what you were talking about, sorry!
That feature is sadly not yet possible. Although Sebastian (the developer) did make a chip library for us, which could still be polished a bit better by adding folders or such.