You have to create the segment for that particular site, Page name(eVar) or Page URL(eVar) contains site name or URL as per your implementation.
If you want for specific campaign then v82 contains/equal that campaign code
Create all segments on hit level. As per your screenshot, you have created on visits level so change it to hit level.
Apply that segment.
Date range select 4 weeks.
Create a report for dimension campaign source code (v82) and metrics visits, pageviews, unique visitors as per your requirement.