The choice field doesn't accept options that are not specified in Column settings.
But you can specify all the options you want in the column settings and hide/show them in the dropdown in the form.
Please find instructions in this post:
The choice field doesn't accept options that are not specified in Column settings.
But you can specify all the options you want in the column settings and hide/show them in the dropdown in the form.
Please find instructions in this post: