Great, but how do I lock it so people can't enter their own amount?

Great, but how do I lock it so people can't enter their own amount?

Hi there,

Thank you for reaching out.

The field settings where you put amounts and numbers is actually not available to others but only the form owners as they're the only ones who have access to the form builder page.

Please let me know if you have any further clarifications.

after automatic calculate,  people can change the answer when they are filling the form.

I have the same question, and there is no option - for read. 

Could you help ? thanks  !

Hi,

I see what you mean now, you can make the calculation field a Read-Only field so that it is locked and cannot be manually filled in.

Let me know should you have further questions.