Toggling M67 for laser manually from GUI

I have PWM laser setup on a 7I76E STEPDIR4 port. I use M67 in my GCode to control the laser. I can only enable the laser when I run the program. I'd like to be able to turn on the laser (<1%) with GUI commands (gmoccapy) while doing job setup. What do I need to do? I've browsed the forum but didn't find this exact question and I only started using LinuxCNC a week ago.

Here is my HAL related to Laser.
I tried adding something like this (to hijack the spindle-enable button) to enable the laser but I get an error on startup. ./CNC_Laser.hal:54: Pin 'hm2_7i76e.0.pwmgen.00.enable' was already linked to signal 'laser_pwm_enable'

I would use one of the Gmocappy macro buttons and issue the M67 gcode. Nice and easy!

Aha, great idea. Thanks for pointing that out. Not working though. None of my Gcode actually uses M62 to enable the PWM even though I thought it would be needed when I first did the research. I looked at HAL show while running the macro and laser_pwm_enable does toggle, but laser_pwm stays at 0. My air assist solenoid does trigger for the 5 second dwell period, but no laser.

Once we figure out the laser turning on part, I would like for the laser to stay on without needing the dwell period. Is that possible?

Entries in the INI
I created laser_trace_on.ngc in the macros folder. (I know the path is right, because gmoccapy would complain about errors in the file before I fixed them.)