Hi Kristy,
The only way to check if a segment you created is matching the right visitors will be to act like the visitors you want to match (i.e visit the relevant pages/ use the specific search terms or referrals defined in your segment).
If you use location, firmografic or known lead data in your segment, I'd recommend letting the segment run a few days before launching the campaign.
This way you can analyze the visitors that matched it by clicking the ### Distinct Visitors on the segments page and verify they were all indeed qualified for your segment.
![0EM50000000T5gh.png 0EM50000000T5gh.png](/t5/image/serverpage/image-id/12503i98AFDA1E176D9C6A/image-size/large?v=v2&px=999)
Regarding your second question, you can use the campaign target URL to define specific pages or URL patterns where your campaign should be displayed on. Here is some more information:
https://docs.marketo.com/display/public/DOCS/Adding+a+Target+URL+to+a+CampaignLet me know if you have any further questions.
Yanir.