Step 1: Create a schema from schema builder https://schema-builder.polygonid.me/

Step 2: Create json-ld and json files respectively, copy the content generated from step 1

Step 3: Add a markdown file in vocab, describe the attributes

# Surname

Describe the family name

Step 4:

Push the changes into github, update "id" in json and json-ld file into the raw url on the github.