Internal supplier registration approval rule

the client wants to create an internal supplier registration rule, the rule details:

1-He wants to put a custom rule for the data entry procurement team because he doesn't want all people to create a supplier. (Or maybe it's better to create an approval group for them instead of a custom role.

2-After the data entry team creates the supplier he wants the procurement dept approval(group of people) to approve to continue the workflow.

3-The final step after getting the approval from the procurement dept approval he wants that the account dept approval to approve.

4-the vendor will be approved and created.