I built a bot in bot framework and provisioned it across Teams, in addition to the default of Skype and Web.
Then, I turned on the Cortana skill, and it worked for me for that channel.
Now, when I add users in testing via the deploy to group option, although they are able to select "Join Group", they're not actually able to use the Skill.
I tried this myself on my machine, but with a new outlook account and Cortana failed to invoke the skill.
Is there something about the accounts I add to the group that I need to configure?
These same users are able to use other skills that have been publicly published in Cortana.