To create an Activated Checklist in Way We Do, Click on the "Add New" button on the top right of the page.
A pop-up window will display with multiple options to choose from, click on the "Create a Step by Step Workflow" option from the list presented.
An Activated Checklist template is displayed on a new page for you. You can then start creating your Activated Checklist by filling it in.
You may also want to check the below guide
How to add steps in an Activated Checklist
How do I add a procedure to a step in an Activated Checklist?