How to create a business process workflow?


In a previous job, we had many business process workflows created to guide a project manager on what to do to get a project onboarded. I'm looking to replicate this in my current job.

To onboard a project, a project manager was guided through process #1, #2, etc, and each process listed out what to do, where to store documents, what to populate. Each process was a specific workflow like what you would see in Visio, but each item within the workflow indicated each step and had a list of work instructions.

I can't seem to find that funcitonality of how to do this.

Would someone help me get started? I'm now part of a beginning PMO group and I'd like to do things right.