ANSWER:

You only change it after praying the fard. If you had prayed the sunnah and then you want to pray the fard, you don’t need to change your place. 

In order to pray the Sunnah After praying fard, we have to change the place. But do we have to change place in the case of Sunnah before Fard? For example :- I pray 2 Rakah Sunnah of Fajr or 2+2 sunnah of Dhuhr then for praying the Fard, do I have to change the place or is it permissible to pray in the same place?