If the AI functionality has been disabled on your workspace, a Workspace Admin can reenable these features in Workspace Settings.
Steps
First, click on your avatar in the upper left hand corner. Then select Workspace settings
Select General from the list of Workspace Settings.
Scroll down to the Artificial Intelligence section. Turn on the toggle - it will appear green once turned on.
That's it!
If you'd like to disable the AI features at a later date, you are able to do this from your workspace settings (just like how they would have been enabled). Disabling these features would not delete any information, it will only prevent the future usage of these features.