With our Parental Affordability Boost, your parents or step parents income (£40,000 minimum), home equity and age are taken into account, enabling you to get a mortgage in your own name.
If you are using the calculator for a Parental Affordability Boost, then just fill it in as a joint application, with your proposed guarantor as Applicant 2.
If you have no current income (e.g. full-time student) then just enter '0' into the Applicant 1 field.