1 Answers
It is possible and this is explained in the lectures too. You can:
1. Create admin user ("root") with billing admin role.
2. As a "root" user create a separate project (in lectures it is called "Admin Project") and create a dataset for billing data export in that project. Other users will not have access to that project unless granted.
3. Create second user Google account.
4. As a "root" user go to billing account management and assign second user to Billing Account User role.
5. Login as second user. Observe that now second user can use the billing account to create new projects but he cannot manage the billing account nor it can access billing data export.