Tara,I would recommend using the filter "clicked link in email" and then using the constraint "Min. Number of Times: 1". Then you can also use the filter "not clicked link in email...
That is correct, however, you don't always need another smart campaign with the flow step "request campaign" since you could run a flow action manually as well.
Nimisha,In order to make a specific smart campaign a requested campaign, the smart campaign's smart list must include the trigger "Campaign is Requested".More info:Request Campaign...
Terri,You can surely resend the same email, assuming you abide by communication limits. However, a couple things to consider:- if you clone the email, it becomes a new email asset ...