Rename Section In Onenote Online. To rename the section tab or remove a name right-click the tab and select Rename. Removing the page title does not remove the title from the section tab.

A Right-click the Section tab B Double-click the Section tab C Save As D Save. It renames and moves the section for sometime but after the screen refreshes the renaming is lost and the section moves back to its original place. When you have a section that contains attachments OneNote creates a subfolder called section_onefiles.
After Simply right-click the section name choose Rename in the drop-down list that appears and type a new section name.
After syncing the name of the section is reverted to New Section 1 again. Change format to email message instead of pdf attachment I sent it to myself using imessages but you could probably just email it too. When you have a section that contains attachments OneNote creates a subfolder called section_onefiles. Renaming does not work.