Only by inserting the new storey with a zero height to next.
A storey doesn't actually need a height to be able to use it - you can still add full height walls or whatever you need.
As soon as you insert a storey with a real height you are pushing all the other storeys above higher - I guess this is logical.
Storeys don't have to be floor to floor heights - although personally I prefer to do that and use layers for walls above/below the main wall in that storey.
You also have the Floor Plan Cut Plane to adjust the display of elements above, below or cut by that FPCP.
As I mentioned before the heights to next just need to add up to allow the main floor storeys to be at the levels you want.
By adding these intermediate storeys you may find you have to be more careful when linking the height of top of elements (i.e. walls) - specifying the storey you want to link to.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11