Default Lister

I want to save my default lister layout. When I go to preferences, I cannot find the option of Launching Opus/Default Lister. Nor can I find Set As Default Lister command in the settings menu. How can I access these functions?

Opus Light will automatically remember the current window's layout and other settings when the window is closed, and use them when a new window is opened.

The Preferences / File Displays / Options / Specify initial folder setting, and similar one below it for the dual file display, can be used to lock the initial folders so that they are not changed if you close a window while it is showing different folders.