Open a building. For more information on how to do so, see section 4.6.1., 5.4.3. or 6.1.1.
Go to the building card (see image below).
Click the tab called "Floor plans" (see image below). Within the tab called "Floor plans" you will find a floors list. In the floors list you will see the floors available in the building you are working with.
It it is not already, specify that the view you wish to base your Excel export on should be shown in the floors list. For more information on how to do so, see section 3.1.in this manual.
Remove any filtering that should not be included in your Excel export by clearing the floors list of filters or resetting one or more columns (see image below).
If you wish to limit the content of the export you are creating, filter the floors list (see image below). For more information on how to do so, see section 8.4.2.
Right click a floor to open a menu (see image below).
Click "Export to Excel" in the menu (see the first image below). When you do so, the floors list will be exported to Excel (see the second image below).