Pump Control Panel Modifications

I need modifications on my pump control panel to suit a revised operation method. Currently, the system is relay-based.

Requirements:
- Modify the panel to enable both pumps to operate in parallel once a single relay is triggered.
- Ensure that the modifications integrate smoothly with the existing relay-based control system.

Ideal Skills and Experience:
- Experience with pump control systems
- Familiarity with relay-based control modifications
- Electrical engineering background
- Problem-solving skills

I'm looking for a skilled professional who can deliver precise and reliable modifications that I can make myself, rather than engaging a controls company to come to site to provide the solution.

I will provide a full scope shortly. The panel
Is manufactured but now the way we require them to start/stop is different.