Garmin G500 Pilot's Manual page 101

Restricted Airspace Viewing Range
The Restricted airspace viewing range option selects whether the map range
is shown on the Navigation Map. Restricted airspace information will be shown
at and below the selected map range. When Off is selected, the information
will not be shown. In the example below where 200 NM is selected, Restricted
airspace information will be shown at map ranges of 200 NM and lower.
Figure 3-58 Navigation Map Restricted Airspace Viewing Range Selection
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190-01102-02 Rev. B Garmin G500 Pilot's Guide