As long as the Mikrotik Gateway Status is “Connected”; you can change the SSID on a Mikrotik gateway through the dashboard.
In the dashboard:
1. Click on Network
2. Gateways in the navigation bar to the left
3.Click the edit button for the Gateway that you would like to update
Ensure the Gateway Status is Connected.
- Type a new SSID in to the “Wireless SSID” field
- Click on the blue sync button
- Press Ok
- Submit the page