This is an EE only feature. See SOS-856.
1. Deploy so-hook (and it's dependencied)
2. Under Site Settings, choose "Social Office EE hook" as the Application Adapter for the site
3. Add a Basic Document
4. Checkout the document
5. Checkin the document : In the list of documents, click the small arrow next to the newly added document and select Checkout, see actions.png.
It's important to follow this step accurately, as there are other options to Checkin the document.
The document is Checked in without any further step.
A prompt should display asking for Major/Minor revision of the file. See
Please note, that if we choose the Checkin button from the full view perspective, this issue doesn't occur.