tinyg issue with GRBL Panel + UGS question

So got my unit built and have my tingy g connected on the desk with power supply and PC.

I able to connect via coolthread console and send command on com4 fine. Ran $test=1 and performed
a smoke test and turns the motor 1 (X-axis) fine.

I downloaded GRBL panel and able to connect and see the Tinyg> OK in the console. But not able to hit the
x+ x- to move the motors.

So I tried universal gcode sender. It works fine with com4, able to X+ X- fine. But the reset or zero axis says
not implemented yet. So is there a gcode you can use with USG to reset or set your home to once you move it
on your project?

Thanks