We can assign a Customer role only to your users, jfederico.
This way, they won't be able to see any vendor transactions such as Cheque Expenses. I'll show you how:
- From the Gear icon, select Manage Users.
- Select Standard user, and then Next.
- In the Select access rights page, select Limited.
- Tick the Customers box.
- Click Next, and then Next again.
- Enter their contact information.
- Click Save.
I've also added these articles for more information about the different user types and roles:
You always have me if you still need help. Stay safe!