Andy Hauseladen's Set Project VersionInfo plugin is no longer in development. It was a part of his DDevExtensions.
His plugin allows you to "clone" project version information to all sub-projects within a groupproj and then edit each field individually.
This might be a good addition to GExperts for new IDE versions going forward. Set Project VersionInfo is not compatible with 10.4 Sydney.
Here is a screenshot of the plughin if you are not familiar with it:

As you can see, there are 7 projects in my project group/software suite. The plugin allowed me to copy all the "boilerplate" information all 7 projects DPROJ files and then edit only the fields that are different for each subproject.
Without having checked it: ddevextensions has been updated significantly by Ian Branch.
https://en.delphipraxis.net/topic/14896-ddevextensions-v-300/
So it is actually under active development.