Collaborating SSIS project using Active Directory

Currently I have a simple SSIS project inside of a server that only allow one person to use. I am looking for an alternative for other people to collaborate with that SSIS project. I have done my research to try using Azure DevOps and Github. But my manager wants me to use Active Directory, to allow users with valid username to access the project. How can I add new user inside of the SSIS project? Is there any way I can just add new user through visual studio so that they can also collaborate? I have added a new user inside of my SSISB folder. But still I have not found any solution.