Setting Up A Google Billing Account
First, you will need to determine which type of billing account best suits your needs.
The link below will help you understand the relationship among billing accounts, projects,resources and authorizations. You will also learn the benefits of using a G-Suite user versus a Gmail account for access.
https://www.youtube.com/watch?v=ow202dbCfmg
The link below will provide you with details on how to activate credit card billing, create a billing account and navigate the key screens for billing. This tutorial will review the project cards and show you how to set a monthly spending limit.
https://www.youtube.com/watch?v=2-Z2gIaYprY
The link below will provide you with details on how to set up multiple billing accounts projects within the console
https://www.youtube.com/watch?v=LqsKLQwnZTc
The link below will provide you with details on how to manage projects and resources within a G-Suite domain.