Allow routines(s) to be scheduled to run at start of day - and block execution until run

From PC-DMIS Forum post 

"Hello,
We have a pair of calibration programs that need to be run at the beginning of the day prior to running production. How could I automatically "lock up" the machine until the operator runs these programs? If there is a method of doing this in VBA, that would be ideal.
Thanks,
M"