Self employed. Income reported 3 ways. 1.Invoices 2.T4A Box 20 3.T4A Box 48. Turbo tax requires expenses for each . Can I instead place all expenses under 1 of the 3?

Turbo tax treats my situation as through I have 3 businesses, which does not reflect how I do business.  Instead the way I am paid reflects how my clients want to manage me