JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Do you mean you want to hide the submit button? To do so, simply add a Show/Hide condition and select the Submit button in the "DO FIELD".
Here's a demo form so you can see it in action: https://form.jotform.com/61198381277969
The submit button will remain hidden, and it will only show up when the Name field is filled.
If you need further assistance, do let us know.