Folder display

Hello.I am a trial user of Directory Opus 10(latest version).
Most of the things i didn't understand at 1st found them by searching this forum ,but not for the following issue..
I like the Dual Vertical display and decided to use that most of the times.I set the folder where i keep my images to dispaly as thumbails.I switch to single dispaly to better view those pictures,and after when i return to dual vertical display all other folders are displayed as thumbails.Have to close lister and open new one to return to normal.I would like all other folders to remain as they ware when returning from single dispaly. I know is probably an easy setting somewhere but,i can't figure it out..

The hovering over the format lock should tell you where the current format is coming from.

More details are in the Folder Formats: Detailed Guide.

It says the format comes from: Edited by user .
Don't know what to do next