In this section, you can open a new project using a template and add a new floor.
To open a new project using a template;
Click on the new project icon.
Click the Start using template in the new project dialog.
Click on New templates and select the White Background project option.

In the project you have just opened, the base story will be defined. To add the 1st story to the project;

Change it if the default height is not 300 cm.
Click the add above button.
The first story with a height of 300 cm will be defined.

Follow the steps of the video below.