Fixed Workflow - More than one active stage

Upon creating the custom workflow, I wanted a fixed workflow where I can select the next ACTIVE stage in the workflow. It is not allowing me to select the next step in the "fixed" it is only allowing me to mark it completed. I dont want to jump from the first step to completed, I want to be able to pick from the drop down the very next stage.

help.wrike.com/hc/en-us/articles/115005876769-Advanced-Custom-Workflows