Can the customer have there own login to enable them to make changes

We are a property agent 

Have created a form for upload of clients property details onto Zoopla.

It would be ideal if they could have an there own log on to make amendments, such as property price if required?

You can share the form with them as sub users, they would have to create their own accounts, once they do, and you have added them as sub users, they can then make changes to the forms that you have shared with them only. 

To share your form with a sub user, please follow this link:

https://www.jotform.com/help/232-How-to-Share-Forms-with-a-Sub-account-User

I hope this answers your question, If not, then please get back to us and explain in more detail. 

Thank you.