Garmin G300 Pilot's Manual page 146

Flight Planning
1) With an approach loaded on the Active Flight Plan Page, press the
MENU Key.
2) Turn or move the FMS Joystick to highlight 'Activate Approach', and
press the ENT Key.
Or:
1) With an approach loaded on the Active Flight Plan Page, press the
FMS Joystick to activate the cursor.
2) Move the FMS Joystick to highlight the approach, and press the ENT
Key. "Activate XXXXX Approach?" window is displayed.
3) With 'Yes' highlighted, press the ENT Key.
Loading/Activating an approach from the Direct-to Window or
Waypoint Page:
1) Press the Direct-to Key or select the Waypoint Page.
2) Press the MENU Key.
3) Turn or move the FMS Joystick to highlight 'Select Approach', and
press the ENT Key. If an approach is not already loaded or activated,
the cursor is displayed in the Approach Field. If an approach is already
loaded or activated, 'Activate' is highlighted.
4) With 'Activate' highlighted press the ENT Key, or select an approach,
highlight 'Load Approach' or 'Activate Approach', and press the ENT
Key.
128
Active Flight Plan Page Menu
Garmin G300 Pilot's Guide 190-00921-00 Rev. D