Design flows in Visio (Public Preview)
Microsoft Visio enables enterprises to capture their business processes using its rich modeling capabilities. Anyone who creates flowcharts or SharePoint workflows can now use Visio to design Microsoft Flow workflows. You can use Visio's sharing and commenting capabilities to collaborate with multiple stakeholders and arrive at a complete workflow in little time. As requested here, you can publish the workflow to Microsoft Flow, then supply parameters to activate it.
Many processes share a common model but have minor variations throughout an organization. This allows an organization to create a master workflow model and adjust instances with specialized parameters.
This feature is available to Visio Online Plan 2 subscription users. Go here to read more about how to set up and use the Visio integration.