Dear,
Check the setting of OPU3 for Adjust scheduling.
Adjust dates in lead time scheduling :- 1 Adjust dates to Operation start.
It is possible if the routing of product A having two operations one for B and one for C You will get the result as you want.
In routing for Product A assign component C to first operation and B to second operation and maintained wait time at the operation level (1 Day). Do the lead time scheduling and check the results.
Hope clear to you.
Regards,
R.Brahmankar