Adjust dimentional sizing independantly would be very useful

On other printers/ software, I have the ability to change each dimension individually(X,Y, Z) . this is very useful .
If you want to make the part thicker, without affecting the other parts of the model is just 1 example.
It looks like that part of the software was designed to lock and unlock that feature. Mine won’t unlock So I have to adjust all dimensions evenly. Is there a way to Unlock this possible feature?

It would be a good option, but I think this option is not enabled.