Can pant legs be widened?

[gefinzi]

I have a pair of suit pants by Attolini that taper more than I would like. On each pant leg the seam on the inward facing side of the pant has about 0.75-1.0" extra fabric. This surplus is not present on the outward facing side of the pant leg. All of the surplus is also to one side of the seam (not split 50/50 anterior and posterior).

Is this extra fabric intended to be used to widen the leg if desired? Can this be done up past the knee? If you widen on just one side of the pant leg (the other doesn't have extra fabric) won't this throw the pant crease off?

I'd like to have the legs widened if possible but don't want to screw up an otherwise wonderful suit.

[the tailor]

The inlay, if it is there, is for letting out.
It is an easy job,
The tailor will repress the creases, no issue with throwing the trousers off centre.