Time and invoices
Time
Everybody records their own time in the file - date, duration and activity, with a stopwatch if they like - and marks whether it is billable. The rate is taken at recording: the client's rate, else the user's, else the firm's default. Users with the billing right see all time and export it as CSV.
Invoices
A draft collects the open time of a client and can be extended with official fees (without VAT), expenses and flat fees. Issuing it assigns the next number without gaps, sets date and due date and writes the Word invoice with both addresses, VAT id, period of service and bank details. An issued invoice is never edited; a cancellation invoice with its own number corrects it and frees the time again. Payments are recorded with their date, overdue invoices are marked.