CODESYS 3.5 PLC Step Chain

I need support with a PLC control project in CODESYS 3.5. The task is to create a simple and understandable sequential control program for a chemical mixing tank / dissolver system The solution should be clean, well-structured, and easy to understand... (Budget: €30 - €250 EUR, Jobs: Automotive Engineering, Electrical Engineering, Industrial Engineering, Mechanical Design, Mechanical Engineering, PLC)