Koji Hatta - 2024-11-18

The attached image shows an additional pull-down menu being added, but I will leave the user interface up to you.
I'm not sure if this is possible, but it might be smart to have a checkbox in the pull-down menu to select whether to split it into multiple items.
I frequently switch between combining into one and splitting into multiple items, so I would like to avoid having to go into the app's settings to switch between them.