In the Advanced Settings menu, the Navigation Options parameter defines how the Auto Steering operates regarding RTK signal correction on IsoView systems with active license. When the parameter is set to GPS + RTK, the Auto Steering can be engaged regardless of the GNSS signal Position Type. If the parameter value is Only RTK, Auto Steering engagement will be conditioned to active RTK signal corrections, so the GNSS signal Position Type must have available RTK corrections.
The image below shows the Navigation Options setting screen.