If you are unsure whether you want to create the group and want community input, frame it as a proposal. If you’re certain that you want to make the group, frame it as an announcement. Either way, be clear about what you see the group doing and how you see it operating, and seek to find interested collaborators.
State whether you intend to be the initial chairperson or are seeking nominations for a initial chairperson. You will need to find a chairperson for the next steps, even if they’re just acting as an interim chair.
As the chairperson, set up each of the following. For anything you lack access to do, you can open up an Axim Request (feel free to batch a bunch of them together into one request).
Create a wiki page underneath https://openedx.atlassian.net/wiki/spaces/COMM/pages/3707371565. Include your name, purpose, chairperson & any other named roles, communication methods, meeting times, and any other info that would help new collaborators jump in and get involved with your working group. Consider adding a sub-page to hold agendas, notes, and recording links for your meetings.