It's time to create a new Manual Segment for you Cerkl.
To create a new Manual Segment go to Audience > Segments > click the purple Create New button > choose Manual and not Dynamic > enter {Manual Segment} > click Save Name
To learn how uploading a CSV to a new or old segment click to read Uploading a CSV to a Segment.
If you have any questions at all, don't hesitate to reach out to us at support@cerkl.com! Or use the chat bot in the bottom right-hand corner of any cerkl.com page for a quick answer.