campaing and oportunities

When I create a new Opportunity since specific campaign, the opportunity don't associate with this campaign.

Then, I can't see the results Opportunity by campaign

I think it is possible to relate campaigns with opportunities, because the goal of the action is to generate sales leads.

Can you automatically create an opportunity when a prospect / contact clicks a mail sent from ZOHO CAMPAIGNS or complete a linked to ZOHO CRM on a website form?

Thanks

Juan