One thing I could not find an answer for anywhere is. When you are using a smart campaign as "content" in a engagement program, what do you set the smart campaign's schedule to?
For example, the smart campaign i'm planning on using has these attributes:
smart list: member of program xyz, in stream 1
flow: send email, random 50% send email 1, else email 2
Schedule: ?? this is where I'm confused. do I need to set a schedule here to match the schedule set on the engagement cadence? How do I ensure that as I add new leads into the engagement program, they are still receiving emails from this smart campaign?
Pretty sure you should just leave it to Once. The Engagement will handle the control of this flow.
Add a Program to an Engagement Program Stream - Marketo Docs - Product Docs
You don't need to set the shcedule. The engagement program will handle that for you.