How to properly set collision when "rolling" under obstacle?

Is there a way to offset or move the capsule’s resizing to the ground/floor, so it resizes from the top down to half height? IOW, set the capsule’s point of resizing change to remain constant at the ground level. It seems that if you can resize a cube or sphere at its bottom corner, as can be done by switching the location of the widget in the editor, you can also change that resizing function inside a blueprint. Not sure how to do it though.