Congratulations! You have successfully set up AnVIL for your lab!
Your lab members should be free to carry out analyses in the Workspaces you created. You should not need to do any further configuration through Terra until you decide to add or change user permissions for your Billing Projects and Workspaces.
You can view costs at any time through Google Cloud Billing. Note that costs are reported with a delay (~1 day).
To learn more about billing and setup, we recommend checking out this Leanpub course.