I am following the tutorial and trying to assign the sidebar to a content model overall, not to a particular field. However, when I go to the Edit screen for a content model (time code 04:24 in video) the option to choose sidebar extensions is not shown.
Sidebar extensions are only available to users on our current plans. It sounds like you’re on a legacy plan. Please reach out to our support team to move to a current plan. This will unlock other features, like our new Apps, as well.
Thanks I will do that.