There is an option in the Bombing Table Calculator for WRCS AGM-45 - it's all the way at the bottom of the drop down.
Zabu is also correct, if you put an altitude for example - in the DT mode of the calculator - that altitude will transfer over to Shrike as well. So if you're doing a DEAD mission with a mix of Shrikes and Iron bombs - you would only have to input your values in the DT calculator and you'd be set for both weapons.
