Here are some comments about the 15-congregation amendment process, from someone who used to be on the GA Planning Committee:
"“Unlike how the amendment process was run for this GA (ie at the discretion of the moderators and board), the process you’ve mentioned is bylaw and subject to little to no interpretation. I wouldn’t wait however. You need to get the petition from the UUA Board Secretary in the next couple weeks, and you have to have it turned Into the Board before February 1st.”
“You don’t even have to have a congregational vote. You just have to get their board to sign off.” ETA: You must check this–rules vary by congregation. Also, look for the UU Governance Lab group on Facebook to connect with Donald Wilson directly.
Also, a comment from another member who was participating on Discuss:
“Some of us are connecting on Slack, mainly to remain in contact with others interested in specific amendments or the amendment process in general at GA 2024.”