Hi iacdxb,
Not a big deal, but: I have one small favor to ask, please use for all questions related to a tutorial, the Help button below the tutorial. This will help to keep things organized and people will find those answers faster. Thank you.
Please have a look at the one minute clip:
https://www.amazon.com/clouddrive/share/LO375Xkh3smI3l39p0nGHp0G5gYFsLShTUnQBwb6tYL?ref_=cd_ph_share_link_copy
Note that my “models” folder was created previously, your “new browser” might be different, but try it, as long as you don’t save the lay out, it should affect things too much.
This is the way I would do it. Choose the folder you like to have in the new Content Browser if the new Content Browser doesn’t show you wanted folder.
I hope that helps.
All the best