I am having a very hard time figuring out a SOP workflow for my Business

So for the life of my I cannot figure out a way to properly structure my monday.com account. So I currently offer multiple services for my company and its important that our employees follow a SOP or check list each service of work per client. Below is an example of the pipeline i am trying to make, this isnt it exactly but it helps illustrate the areas I am stuck at. Please help thank you!