The questions in the discovery process (asking about lead generation, the sales process, how the company makes money, etc.) help outline your flowchart.
Start with how the business finds its leads and clients.
How do sales reps work with those incoming leads? What are the applicable actions?
What needs to happen to close a sale? Is there a kind of disqualification process as well?
Does anything happen after a closed sale? (Services rendered, follow up, repeat business, etc.)