Stud patter and offset of Jazz

[melvin]

Hey guys I have a set of enkeis rp01 15x7 offset +45 will that fit my jazz perfectly?
Person I'm buying from said I need to put somethig in the inner centre of the rims for it to fit
On jazz is that correct? Is that spacers? Will it cost alot? And finally shld I just go to bob Jane to get it fitted? Rims comes without tyres as well. Sry for the many questions haha, I'm sucha noob

if it helps i run 15x7 offset +40 and it just clears the brakes at the front.