Winders - "new shaped stair " dialogue missing

[Chrisw1]

I am trying to follow the instructions on this article, https://www.homedesignersoftware.com/support/article/KB-00486/creating-stair-winders.html#Automatic, to convert a standard L shaped set of stairs to winders. 

 

However, the dialogue box depicted in the article doe not come up with I chose to make L or U shaped stairs. How do I convert these stairs to winders or how do I find the dialog box?

 

 

 

Here is what I see:

 

I do this:

 

And then the stairs appear instantly ready to place like this:

 

 

 

 

 

I'm using this version of Home Designer: 

[solver]

2 hours ago, Chrisw1 said:

the dialogue box depicted in the article doe not come up

 

That feature is new in the 2021 version.

[Chrisw1]

I updated my signature per your advice. 

 

I upgraded to Pro 2021 and I still do not see that dialogue box to convert a shaped staircase to winders. It looks the same as the earlier screen shots. 

 

Any idea what I am missing?

[solver]

Click the L or U shaped stair tool.