Select a project working copy for the user library you want to develop
Use an existing project that is under version control. The project needs to be closed before you proceed.
Create a new project, put it under version control, and close it.
Check out the .vcf root folder recursively from the user-library repository to a new folder in the "Libraries" folder of the project working copy selected in step 1
The new folder must have the desired and unique name of the new library with the extension “.vcf”
Open the project from the project working copy selected in step 1
Open the version-controlled user library for changing (you need the password for write access) and make changes