Option to only allow one "Phone" & "Email" & "website" input per webform

Hello,

Every good web contact form, including that from Podio support, does not allow to add multiple emails, phone numbers, or links to be added to avoid spamming. As Plus member, I am not able to choose an option for phone, email and link (website) fields not to allow the "add another" option underneath those fields, nor can I choose which email and phone number to request as default (it is set to "other" as default). Can you please fix that?