Podunk,
You will net to add an AND condition to be able to turn the output OFF with a button.
[Sipindle ON]------[No Op]--------|AND|__________[Output#4]
[Input#5]----------[No Op]--------| |
Something like that, the output 4 will only be active when both spindle and output are active, if you turn either input off, Output 4 will turn off.
Hope that makes sense.
Regards
Fernando