Here is a post processor that I modified for Thermwood 3 Axis Routers. It is based on the default post available in the Fusion 360 library. Modifications include the option of using the pop-up pins, and eliminating the M48 code, which overrides the rapids with feed rate knob.
When posting with this processor, you will be prompted to press cycle start to raise pop ups, and again to lower. Rapids will not be controllable with feedrate, but cutting motions will. This more closely mirrors the output from Thermwoods control nesting.
Please use at your own risk, and test thoroughly. I have tested it on our machine, but am not responsible for your operations.