The following operations $($with cycle times$)$ are needed to release a customer order to production:

$1.$ Define Bill of Materials: $2$ days

$2$a$.$ Order and receive materials $($can be done concurrent with $2$b$)$: $10$ days

$2$b$1.$ Schedule job in production $($can be done concurrent with $2$a$,$ but must be before $2$b$2$ and $2$b$3)$: $3$ day

$2$b$2.$ Define quality plan for product $($can be done concurrent with $2$a$,$ but must be after $2$b$1$ and before $2$b$3)$: $1$ day

$2$b$3$: Enter schedule and quality requirements into scheduling software $($can be done concurrent with $2$a$,$ but must be after $2$b$1$ and $2$b$2)$: $1$ day.

$3.$ Release to production

The latest start time for step $2$b$2$ is: