Our club has two jot form accounts. We want to share forms in both these accounts.

Treasurer designed form in her Jot Form account.  Corresponding Secretary wishes to edit and distribute via her Jot Form Account.  Is this possible?

If not, how does one person copy the form from another's account?

Yes that's possible. Here's how to share forms to another account. http://www.jotform.com/help/232-How-to-Share-Forms-with-a-Sub-Account-User

If you want to clone forms to another account, that's also possible. Here's a guide: http://www.jotform.com/help/28-Cloning-a-Form-from-a-Web-Page

Cheers!