First, make my milk bread dough! Go see the tutorial here:
redstaryeast.com/recipes/milk-bread-honey-bun/
Then refrigerate the dough, don't make buns, and follow thus tutorial to make it laminated, like a croissant but in a loaf, and more tender.
For the 6 strand braid tutorial, see our The Isolation Baking Show: Challah episode:
https://www.youtube.com/watch?v=2isWWgXWfrk&t=28s
go to 48:04 in the timeline to see a six strand braid demo-ed more clearly. And WATCH THE ISOLATION BAKING SHOW!