How do I edit a Web Form I have created?

How do I edit a Web Form I have created?

Hi, 

I have the standard version of Zoho CRM and I didn't realize I only had the ability to generate 5 web forms. I wasted the majority of these 5 forms in testing. Do I have have the ability to edit one of the forms I already created? I know I put the wrong URL landing site and would like to fix this. I cannot see in the code where to swap this out. 

Thanks, 

Christine