Thanks for the suggestion! I'm new to this and wasn't sure how to get the information I need without giving too much info. I'm using Home Designer Pro 2021, and am creating a two story plan over a walkout basement. The plan calls for two curved stairwells that allow an opening to the first floor. I have created the stairwells from the first floor and have adjusted the length to reach the second floor. I just need to know how to create the opening in the second floor to the first?