In the main menu, select the Organisation for which you want to specify an auto-approval step. Then go to "Approval workflows" under "Workflows and settings": Open the workflow for which you want to specify an auto-approval step and click on the “+” ...
The Auto-approval step is an additional first step in workflows that's available during trial periods, Advanced Feature trial periods and in Advanced/Premium plans. In this step, you can enter conditions for the automated approval of requests ...