How do I setup approval workflows with more than three signatures?

are there step-by-step instructions on creating an approval work flow with more than three signatures?

Thank You

If I'm understanding your concern correctly, I believe what you are looking for can be achieved by following the instructions in this guide — A-General-Approach-on-Building-an-Approval-Process-Workflow

Kindly check the workaround explained in that guide and feel free to let us know if you need any further assistance.