SCOPIDEA allows administrators to create invoices for clients in order to record sales transactions. Invoices can be created for specific clients by filling out client information and then selecting the client. Invoices can then be generated based on project hours, expenses, or manually. Invoices contain information such as a unique ID, client, tax, issue date, discount, due date, currency, and item details. Users can edit, duplicate, delete, send as thank you, or record payment for invoices in SCOPIDEA.