Access Developer

I need to have a custom Access 2007 database created for invoices. Input Layouts and reports printouts to be completed by you. Open to suggestions for best practice for billing and tracking database. 1. Add login to prevent unauthorized access. 2. Must be multiuser- max? 4 users. 3. Access Database table with start of fields and forms created, need help with Orders, Order Details, Invoices, VBA, and reports 4. Invoices will be generated one at a time, or for a user specified period, from invoice # to invoice #. 5. Invoices will have summary and detail. 6. Data input will be done every day. 7. Sample of existing invoices will be provided.? Three users? will be inputing: Patient Information Pages Type