How can I add an end date to my campaign in Zoho Campaign so it integrates with Zoho CRM?

How can I add an end date to my campaign in Zoho Campaign so it integrates with Zoho CRM?

I am trying to add an end date on my Campaigns in Zoho Social so I can see where a Lead in Zoho CRM came in from if they came from a Campaign. Is it possible to add an end date to a campaign after it has been sent out?