The Merge into Another Section feature in OneNote allows you to merge the sections from one notebook to the section of the other notebook.

You can organize your notes for work, school, and home with Microsoft's OneNote program. OneNote lets you create multiple notebooks, pages, and sections to organize your notes in.

OneNote is an ideal tool for implementing PARA, allowing users to create a dedicated notebook with section groups for each category, making sure logical organization and easy navigation.

Launch OneNote, expand your newly created notebook, and select New Section. You can even right-click on a section and select New Section Group for better organization.

OneNote allows you to add color to sections to help with the organization of your sections. Learn how to add Colors to Sections in OneNote.

As you can see, I have Personal, Professional, and Quick Notes sections in my OneNote. This easily allows me to organize research I need to conduct according to each branch of my life.