Tool Length Sensor GSender and SLB $341 setting

Greetings,

What is the interplay between the Tool Length Setter options in gSender and the $341 firmware setting for grblHAL?

Should I leave $341 set to normal and use the gSender (1.4.7) option for Fixed Tool Sensor?

Should I set $341 to “Automatic Touch off @ G59.3?”

Not sure of the best approach. This is the first time I’ve attempted to set up a Tool Length Sensor.

Thanks!

Anybody have thoughts on this one?