Data structure
Here we can discuss the overall data structure of the website.
For instance for now we have created a schema "Volunteer / Organization participant" which contains partially the data of a class "Person" (see here https://schema.org/Person) plus some additional data, like organization affiliation, etc. -- But actually we could "recursively" subdivide the form, into another child form, and create a more generic schema for a person. Then this class person can be used as a component for the form "Volunteer / Organization participant".
This would allow much more flexibility in using the data related to a person in different cases.