What is the best practice to deploy changes in VB Studio to other instances after testing?

Summary:

What is the best practice to deploy/migrate changes in Visual Builder Studio to other instances/production after testing is finished?

Content (please ensure you mask any confidential information):

• Multiple team members are working on different pages in the HCM extension with different go-live dates
• Based on the documentations and posts, my understanding is that we need to work:
  • In 1 project with the HCM extension
  • In multiple workspaces
  • In multiple branches
• Questions:
  • What is the best practice to do the testing in our test instance, while migrating the already tested changes to other instances?
  • How should we pull over only the tested changes (from the given branch)?