Reply To: Change child to concession

What we are trying to create here is a concession field
We want to make the adult field non mandatory
and if they enter a child which we have labelled “concession” they can enter a number here of 1 – 10 and we will have a different price associated with the concession
Please show us how that code would look?
Also so that no error comes up associated with the adult field when it is zero