Simple sales process flowchart

I'm seeking a skilled freelancer to create a detailed sales process flowchart for one of my clients — an Air Source Heat Pump (ASHP) installation business.

Project Objective:
To visualise the end-to-end sales process, from initial lead purchase (via a third-party lead generator) through to sale closure and installation.

Key Deliverables:

A clear, professional flowchart mapping out each stage of the sales journey

Identification of timelines and key milestones

Departmental responsibility at each stage

Visual indicators of potential weaknesses or friction points in the process

Highlighted areas where prospect dropout commonly occurs

Purpose:
This visualisation will be used to review and improve the client’s internal sales workflow, identify inefficiencies, and optimise conversion rates.

Ideal Candidate:
You should have experience in sales process mapping, business analysis, or workflow design. Experience working with renewable energy or home improvement clients would be a bonus.