Creating a container element on Business Workflow - swdd(workflow builder)

Hi there,

I'm currently creating a container element in workflow and using it in the step mail

1. I created a workflow definition on SWDD

2 I then created a container element for a Carrier ID

3. entered details pertaining to carrier Id

4 Confirmed

5. had to create a mail step in the workflow

did all of the above well but in the end I have to save and activate, tried, but my save button is greyed out, can't click on it, how do I save and activate?

Kind Regards

Portia Mkhize