Is it possible to add or remove fields in the instant order form?

[Dairo]

Hello friends, question, I am using version 1.5.1 and the niara theme

In 5-step authentication, in the second login step, when choosing instant order, is it possible to add or remove fields?

In the clients > clients section, in the "establish required fields" part, I only get two options "newsletter" and "optin".
On the other hand, in clients > addresses, if there is the option to establish some fields as mandatory such as the ID, however, when selecting it, in the second step of authentication the ID field does not appear, and when filling out the other data in the instant order and give confirmation, it says that the ID field must be filled out.

Thank you so much.