Press and hold the ch knob to accept your changes, Position reply, To enable/disable position reply – Raymarine Ray54 User Manual
Page 87: Press the ch knob to accept

Chapter 6: Menu Settings
77
6. Make your changes, using the CH knob using the same technique
described in Adding an Entry on page 59.
7. Press and hold the CH knob to accept your changes.
8. Press the CH knob to save. The revised entry appears in the list.
Position Reply
This option enables you to determine how your radio responds to a request
for your GPS position information (lat/lon) from another station.
➤
To enable/disable Position Reply:
1. From the DSC SETUP menu item described on page page 71, rotate the CH
knob until the arrow points to POS REPLY.
2. Press the CH knob to accept.