As a Stakeholder of a Process, you can import a Visio diagram while inside the Process.
Importing Processes can speed up the creation and editing to allow for an easy flowing Process. It allows you to import Activities, Tasks, Notes, Activity Tags, Process Objectives, Process Notes, Triggers, Inputs and Outputs.
Upload a Visio File
Open the Process you want to import to
Click on the Import button
Select a File to upload
Click on Choose File and select a file
Drag and Drop the file into the Import area
Importing a Visio document works in a similar way to importing a Word document. Each shape that holds text will import into individual sections in the Import panel. Each section can be changed and imported to create a Process workflow.