On the workflow chart, select the plus (+) icon and on the Workflow action dialog box, select Generate text.
In the What do you want to generate? box, enter the prompt for the AI to generate your text. For example, "Remind a manager that their new employee starts next week, and they should remember to prepare for their first day." See our about article for more information on this: About the Generate text workflow action.
From the Run as user list select the user you want to to run this as. For example, the triggering user or if you retrieved a user in a prior workflow action, you can select them here.