Add schema.org to the website that displays maDMPs.
Scenario is:
upload maDMP
display its contents
include schema.org in the website's code (provide as many information, as you can read out from the DMP. Do not use just a minimalistic DMP for testing, but all of the DMPs you have used for schema testing. If a DMP has information about a dataset, then include it in the schema. Pick things, that make sense)
Validate your website with the Structured Data Testing Tool from google.
Add schema.org to the website that displays maDMPs.
Scenario is:
Validate your website with the Structured Data Testing Tool from google.