You can use 'Feature recognition', but I'm not a big fan of it. It doesn't work that well I think.
It doesn't find the features that were used to create the model, it just finds a shape, i.e. a hole, removes it, and creates a new feature making that hole on the same spot. Then you can modify it, dimensional or in positioning.
Sometimes this can be handy, but I prefer to keep clear from this messing about. If it's only a small change, like one hole that needs to be moved, I close it using an extrude, and make a new hole with an extrude or hole feature. If there is a lot to be changed, I usually remodel the whole part.