Need setups where all internal stakeholders of particular procurement contract can view, edit

Summary:

This is new requirement for business where all internal stakeholders associated with a particular Procurement contract can view, edit and submit their corrections in clauses of Procurement contract document when contract is in draft stage. Also users should be able to see what are the changes made in the contract clauses document, who has changed it and should be able to compare the changes with the original document

If someone already has implemented this, please let me know detailed steps to enable it

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):