You can't alter the landing width or the overall length or width as that would change the shape of your custom stair - and depending on the shape of your stair these values may mean nothing anyway.
But you should be able to alter all other values including the overall height (if you unlock it).
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
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