Tap the tool button for the note you want to complete.

Tap the Complete icon button.

Note: The "Complete" button is only visible to the note creator.

A confirmation pop-up will appear.

If there are no issues, tap the "Complete" button.

Note: Once you mark a shared note as completed, it cannot be edited anymore. For more details, please refer to this link.

Tap the "Completed Notes" tab.

The note will be moved to the list.