How can I set the size of a window, door or wall exactly?

1. Go into the blueprint view and then enter Room Builder, if you are not there already.
2. Select the wall which the window or door you want to resize or which you want to resize yourself.
3. You will see an image like the following with dimensions shown for each element of the wall:
   1. Before the window (in this case 3.83m)
   2. the width of the window (in this case 1.00m)
   3. After the window (in this case 2.93m)
4. Simply click directly on the number you want to change and a pop-up will appear allowing you to change it by entering an exact number
5. In the case of the window it will allow you to change its width, height and offset from the floor as shown below: