Fixes for OneDrive "Processing changes" ... See also OneDrive status stuck on "Sync pending" How to cancel or stop sync in OneDrive
If you want to make changes to a file in a SharePoint document library but keep others from making changes at the same time, check out the file in the document library. When you check out a file from a SharePoint document library, only you can edit it.
To see others' changes and share yours, you'll have to save the document from time to time. Documents with Macros (.docm) If your document contains macros (.docm), you can still edit and collaborate. You can open and edit the content like any other document, including running macros.
On the List settings page, edit the settings and properties you want, such as name, description, add versioning or validation, column ordering, or adding more columns. Each setting allows you to set or cancel your changes and additions. Continue to the next sections for more detail. When you're done, return to your list to see your changes.
These days with AutoSave, your changes are always being saved so you won't lose your work. To make sure you don't accidentally save changes in the original file, use Save a Copy BEFORE you start making your edits to ensure you're working on the new copy and not overwriting the original.
Important: To make changes to the logo, title, description, and other settings you must have owner or designer permissions on the SharePoint site. For more information, see Managing site permissions. You can change the logo, title, and other settings for SharePoint in Microsoft 365 team or SharePoint 2019 communication sites.