'proper' carpentry workshops (Unix,Git,Python) don't have a column to enter the lesson link but the information isn't filled in automatically either e.g.
Slug: 2026-06-11-NCL
Internal ID: https://workshops.ncl.ac.uk/admin/core/occurrence/57872/change/#bookings
Title: The Unix Shell
Lesson site: :
Collaborative Doc:: https://hackmd.io/@RSETeam/2026-06-11-NCL/edit
Website link: https://nclrse-training.github.io/2026-06-11-NCL
Also, 2 colons after Collaborative Doc :-)