In step 1, you must select a roof type. There are 11 different roof types. Choose one that corresponds to your roof.
After selecting the Icon/Image for roof type, you will get on the right side the frame with technical image with dimensions and input boxes. Enter the dimensions for your roof.
In the left upper corner of the frame you have an icon with questionmark. Picking this icon you will be redirected to the help page for this particular roof type.
When you entered all the values, you must confirm them with picking the ADD button. In case you have entered wrong dimensions, you can change them anytime, but you have to confirm them with picking the UPDATE button. In both cases you will get the green info bar with confirmation message: Added/Updated successfully.
Pick button FORWARD to proceed to Step 2.