What Infinity package is it you have? For new installs Infinity 1 is now a self install with no engineer visit. Infinity 2 is still an engineer visit.
If the house you are moving to has presently got Infinity it will just be a case of you connecting up your Openreach modem, if you have one, and your homehub.
If it doesn't have the correct faceplate, ie a filtered face plate, you will need an engineer to change it or if on Infinity 1 you need to use micro filters.