How to mark a step as optional, what does it do?

1)

Post creation of category, click here to add a new guide

2)

Enter Guide name and Description

3)

Click on "Submit"

4)

Enter Step Title and Description

5)

Set width and weight for pop-up

6)

Select desired option

7)

Choose position for the pop-up

8)

Click on this box if you want to make the step optional

9)

Click on "Save"