Add a section named “Background”. Within it, add:

Each Explorer (which isn’t the Expedition Leader) has none or two Backgrounds, which is privately tracked by the Expedition Leader, and Explorers default to having no Backgrounds. The Backgrounds an Explorer may have, and the powers (if any) that they have for having such a Background are the following:
• Handyman:
• Adventurer:
• Scholar:
• Military:
• Spy:
• Cultist:

If an Explorer has no Backgrounds, they can, at-will but once ever during this Dynasty, privately request the Expedition Leader their Backgrounds. The Expedition Leader then can and shall grant them two (secretly random and different) Backgrounds in a timely fashion, and privately communicate to the requesting Explorer what their new Backgrounds are.