1) you can't it's an option.... i hate this too , the only way is to run your first part in single block, so the rapid will slow down with the button
2) copy this to your program
G50Z???? (Z= shift value for next part)
then yse an IF/GOTO function to return the program to the top
the m02 will clear the shift amount
"As a side note, I am using Mastercam and am not familiar with the"
In House Solution provide me a really good post processor for that OSP, i simply hate how IGF works