Visit the rental story map to get all the basics on collecting data, navigating, and transferring data using TerraSync and Pathfinder Office. https://storymaps.arcgis.com/stories/6400358a8a3b4fa99a350b119cd903f2
The attached support note demonstrates the workflow for using Pathfinder Office to post process Positions and GPScorrect ssf files and apply the corrections to the axf file.
When using a MN County Coordinate System in TerraSync to test the accuracy via data feature or waypoint be sure that your coordinate system units are set to 'US Survey Feet' instead of 'Feet'