Broaching an ID key way on SQT-15 M T+ control

We're looking at a job that requires a 1/4" key way in a 1" ID bore 1.5" deep in 6061 material 500 pieces.

Looking at Razorform tools and from the videos they seem to work well.

My question lies in how would you program this in Mazatol, a manual block or is this a G code job?

Any examples of similar operations would be appreciated.