How to enforce user adding Invoice to be different from user adding Draft Invoice

Hello Experts!

We have a group of users who adds A/R Invoices in SAP. Our procedure requires one user to create the Invoice as Draft, then a second user checks the Draft Invoice and then adds it. All of these users can add Invoices, but they cannot add invoices with a draft created by themselves. This ensures every invoice posted are checked by 2 users.

Is there a way for the system to enforce that the user adding the Invoice is different from the user creating the Draft?

We user SAP Business One 9.0 PL 08.

Thank you,

Grace