Hey rihards,
You mentioned that an event wouldn’t work in this campaign - is your campaign segment triggered, then? If so, there are two different ways to add the missed people, depending on how many people were missed.
A small handful of people:
You could add a new attribute manually (by going to People > select a Person > Attributes) indicating that they were missed, then create a new data-driven segment targeting those people. Then you could adjust your campaign trigger criteria to also add people in your new segment to the campaign.
(This would be faster than creating a manual segment)
A larger number of people:
You could create a manual segment using a CSV upload, and then adjust your campaign trigger criteria to also add people in your new segment to the campaign.
(If you only had a handful of people it might be overkill, and the method above of manually adding an attribute might be faster)
I hope that helps! If not, if you could provide more information I’d be happy to take another look
Thanks @leaht,
I guess the manual attribute update would work.