Choose an item of the save menu of the edit form (the arrow next to the main button): "Save and continue editing", "Save and add another", "Save as a new entry".
Examples
When I choose "Save and continue editing" from the save menu of the edit form
When I choose "Save and add another" from the save menu of the edit form
When I choose "Save as a new entry" from the save menu of the edit form
When we choose "Save and continue editing" from the save menu of the edit form
And I choose "Save and continue editing" from the save menu of the edit form
Pattern
When(/^(I |we )*choose "([^"]*)" from the save menu of the edit form$/, …)
Part of @webship-js/craft-cms-steps (github.com/webship/craft-cms-steps), a step pack for Webship-js 2.0.x.