If you want to perform an action for a large number of notes (such as moving notes to another notebooks, exporting, deleting notes...), you can do that quickly by selecting multiple notes in the notes list. Follow the steps below to select multiple notes on each platform:
Select multiple notes: Press and hold the Cmd/Ctrl key, then click the notes in the note list column (they don’t need to be next to each other).
Select multiple notes that are adjacent: Click the first note, then press the Shift key and click the last note. All notes in between are included in the selection.
Select all notes in the note list: Click any note in the note list, then press the shortcut Cmd/Ctrl + A
Once your notes are selected, you can perform the following actions:
Pin to the top
Add to Quick Access
Move to another notebook
Add to notebooks
Move to trash
Tap the ... button in the lower right corner of your note list screen.
Tap Select Notes
Select multiple notes by tapping the circle in front of each note row
If you want to select all notes, tap on ... again and tap Select All
Once your notes are selected, you can tap on the notebook icon at the bottom bar to add/move notes to other notebooks; or delete them.