Ability to add teams channel to meetings created in outlook already
For all the meetings created in Outlook, there should not be a need to create a new meeting just to attach it to a channel. You should be able to edit the meeting in Teams and add a channel.
Gary Wise commented
Currently, it is not possible to associate a Teams meeting created from the Outlook client with a channel. The ability to associate a private meeting with a channel post creation will allow for better team collaboration, including the referencing of meeting notes and associated documents by all team members.