Folder format not saving

Hello,
I am trying to customize the size of the columns in folder as well as adding the created date column but as soon as i close directory opus, the folder reset all the columns size and remove the created date column.
Is that normal behavior or is there a way to save that please?

Folder Formats: Quick Guide

Thank you, after reading that link i have managed to make it keep the created date column but the columns size still doesn't save correctly, it just adjust to the longest file name in the directory it seems, each time i restart do. I m using the save folder + layout&folder option. Is there something i am missing?

Check the auto-size option is turned off on the Display tab, when editing the format.

In Opus 12, this works a bit differently: youtube.com/watch?v=jS1Mvs46WH8

Thank you very much that was the option I was missing. all is perfect now.