LCD Display Screen

Good day,

We have mikrotiks that we provide clients with and what I would like to do is set the wireless SSID and password that is on the mikrotik to be displayed on the LCD screen.

If I run the following command it provides me with those details on the screen:
lcd show screen wireless

The problem is I would like this to be the default screen on login and should never change (on reboot it reverts back to the default main menu). Any advice on how to go about doing so?

Put it into script executed on reboot. Executing script on reboot you can set in the scheduler.