The way to define sloped slabs using 3 points with a difference in height is as follows:

1. The floor slabs are inserted into the plan without any slope, just like the rest of the slabs, defining their outline using beams or walls and then defining and inserting each slab using the options in the "Slabs" menu:
   • Each slope or edge of a roof panel must have its outline perfectly defined by elements such as beams; thus, a gable roof must be composed of two roof panels, and a hipped roof must be composed of four roof panels.
   • All floor slabs will initially always be assigned to the group's base plane. The group's base plane is the horizontal plane that has the elevation defined for that floor and will coincide with the upper face of the floor slab entered.
2. Then, from "Groups > Sloped floor slabs/Elevation changes", click on "Add" to create a new plan.
3. Select "3 points with elevation change" and then click on "Define on plan".
4. On the floor plan, define the points with differences in height and enter the necessary data:
   • When you hover the pointer over the program, it will display a red circle indicating the capture of elements, such as beams, that form the outline of the panels. When you click on one of these points, a context box appears where you can enter the elevation change (negative or positive) above the base plane of the group.
   • The data is then validated using the button on the right. The program will display a dimension on the screen indicating the difference in height associated with that point.
   • This process should be repeated with two other points. For example, two points can be taken from the ridge beam axis and one from the eave beam axis.
5. When validating the third point, the "Sloped floor slabs/Elevation changes" window will reappear. Now, you will need to click on the button in the "Assign" column in the line corresponding to the recently defined plane.
6. The program will display a colour code on the floor plan with the assignment of planes to each panel. You must click on each of the slabs or beams to which you wish to apply the elevation change. This will change their colour.
7. To finish assigning planes to panels and beams, click on the right button, which will reopen the "Sloped floor slabs/Elevation changes" window.
8. Steps 2-7 must be repeated to create the other planes with elevation changes and assign them to the corresponding floor slab panels (for example, the other three sides of a hipped roof). You can take advantage of the elevation change points previously entered in the definition of other planes by selecting them in the process of defining a new plane.
9. Click "Accept" in the "Sloped floor slabs/Elevation changes" window to complete the operation.