It sound like the tutorial is saying
if you want to you can go ahead and put in all your bottoms and then put in all your tops
I guess "put in all" is easy to understand in everyday speech.
The question is, is that grammatic for written english?
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It only takes a minute to sign up.Sign up to join this community
The video is about building a framework that includes pieces of wood along the bottom of the intended structure ('bottoms') and pieces of wood along the top ('tops').
Both the tops and the bottoms need to be incorporated into the structure ('put in' - a perfectly grammatical term).
The speaker is saying that you can do that for the bottoms and then for the tops.
None of what he says is colloquial. It is certainly not ungrammatical. You just have to understand that 'bottoms' and 'tops' refer to pieces of wood at the bottom or top respectively of the intended structure.