- Open a position.
- In the "Element" section, on the "Edit" tab, click "Profile extensions":

- A new window opens.
Apply profile extensions to all mullions
- Click "All":

- Enter the dimension for the bottom extension:

- The bottom extension is applied to all mullions:

Apply profile extension to individual mullions
- Click "Individual":

- In the position drawing, click the mullion for the profile extension. To select multiple mullions, hold down the CTRL key and click the required mullions:

- In the "Profile extension" window, enter the dimension for the bottom extension and click "Apply".
Apply profile extensions to insertion profiles
- Select "Profile extension separately for insertion profile" to apply profile extensions to insertion profiles.
- Enter the dimension in the text box and click "Apply". The profile extension is displayed in the position drawing:

Edit profile extensions
- In the position drawing, right-click the profile extension.
- From the context menu, select "Edit" > "Extension":

- Change the data for the profile extension.
