Once Conversation AI is enabled for your agency from the "Company" tab in Agency Settings, a new "Conversation AI" tab gets added to your Agency settings. Manage the Feature and Rebilling for each Sub-account in this new tab.

Use the toggle, to manage the feature for each sub-account. Switching the toggle off will not let that sub-account use conversation AI and if the sub-account was already using conversation AI, it will stop any further AI generation in that subaccount

Use the toggle, to manage Rebilling for each sub-account. Switching the toggle off will stop Rebilling for that sub-account and the agency will have to bear the cost for that sub-account