You can resize the preview by simply stretching the settings dialogue and/or minimising (closing) some of the open sections like 'Custom Settings' or 'Floor Plan & Section'.
But I understand what you mean - hide all of the size parameters (because you can add then to the Custom Settings interface), and be able to make the preview larger so that it can take up the space of the hidden parameters.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11