Can I create a separate account for a website client?

I have created one "sub-account," per your procedure.  I have done some website design and building for several clients, and it would certainly be possible to have them establish their own, completely separate accounts, then provide the access information to me so I could use their accounts in connection with their websites/forms.  The sub-account I created was for a non-profit public-service website I maintain independently.  Since I can't create additional sub-accounts, do I have to have my clients set up their own separate accounts or can I do that for them?  (They really won't care one way or another--all a matter of time and trouble.)

You may create separate accounts for your clients and add your account as the sub-account so that you can manage their forms right from your account. However, please note that the limits of the forms are still applicable as per the accounts created for your clients. If the forms in any client's account are receiving more submissions, it is required to upgrade their respective account.

Please refer to the guide below that can help you with more information on sub-account users.

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

If you have any other questions, please let us know. We will be happy to help.