Does Stream 1 of an engagement program need transition rules if I want to send it to members of a smart list?

@megweber221, you'd still need a campaign/transition rule to add people to the Engagement program, right? You'd need a batch campaign since you're referencing non-trigger-based criteria to add people to the EP. Marketo, by default, adds people to stream 1 of the EP if no stream is mentioned outright—e.g., if you add a person who's not in an Engagement program as its member using a Change Program Status flow step—then Marketo would add the person to the stream 1 (since the "Change Program Status" flow step doesn't specify the stream to which the person needs to be added). 

However, the "Add to Engagement Program" flow step requires you to mention the stream, so you'd need to select the correct stream (stream 1 in the 1st campaign's case) to add people who're member of your nurture smart list to the Engagement program. To improve efficiency, you can also directly add the filters used in your nurture smart list in the campaign's SL instead of nesting SL.

Also, just FYI clicks are not the most reliable engagement activity, as they could be generated by bots—especially if your instance does not have the bot filtering feature enabled.

HI @megweber221 ,

I second @Darshil_Shah point.

Also for more info, Transition rules in stream are designed to PULL leads in to streams, so if your EP is designed where leads can move back & forth you will have to add transition rules in your Stream 1 to pull leads IN.