To enable WorkWithPlus AI Module in your KBs, you should run the Design System Wizard from the menu WorkWithPlus-->for Web-->Design System Wizard.

In the Design System Wizard, there is a new property named 'Include AI Module' in the step 'Basic Settings' and also in the step 'Master Page' within the 'Advanced Settings'. Just turn on this property as follows:

Additionally, the developers will be able to define other settings (descriptions, security, etc.) for each of the transactions, but there's no need to add any code.