Go to white-label from left side click on package and create a new package and enable AI agent option from here and if you want to add AI Chat bot in already created package that you already assign to sub-account enable these options and re-assign package to sub-account.
To re-assign package here is the guidelines:
https://support.flowtrack.co/How-to-assign-package-manually-f2f6a191e721438f9f22913d521aec6c