With M-Files, several users can edit a document at the same time. You can check out a document for co-authoring via Microsoft Office for the web when the Microsoft Office for the web tools and co-authoring have been enabled for your vault or vaults.
Does your M-Files look different? - This video features the previous user interface. This video will be updated shortly to feature the latest version of M-Files (released in November 2022). Please note that the lessons in this video still apply.