Creating Quote "Revisions"
After a Project is created from a Won Opportunity, users can utilize the Change Order process to track any changes after Project creation.
Before Project creation, the user can Duplicate Quotes within the same Opportunity to track "Revisions."
For example, you may have created an Opportunity and the V1 Quote within that Opportunity. The Proposal is presented to the Client for Acceptance, but the Client requests a couple of changes.
In this case, you can open the Opportunity/Quote in questions, duplicate the original V1 Quote, and make the requested updates to the V2 duplicate copy while retaining the V1 Quote as a reference of what was originally presented.
Open the Opportunity in question
Click on the ellipsis menu(three dots) to the right of the Quote name
Select the "Duplicate" option from the menu
Make the necessary changes to the V2 duplicate copy while retaining the V1 Quote as a reference
Share the update V2 Quote with the Client to present the changes