Open Easel, press CTRL+SHIFT+D (Or CMD+SHIFT+D on Mac)
Machine Inspector will open, locate the Console text window (empty)
Type $$ and press Enter, your current GRBL parameters will list below.
To edit any of these values, say for Z axis step/mm value:
$102=NewValue and press Enter
Reboot controller (not always needed but its more consistent) and display the current values ($$) to verify.
