It depends what kind of curl they want, if just for body the largest that fits with a single curl in it, long hair I'd use setting rollers.
Yes still neutralise, the budget neutraliser at the warehouse works fine. No it dosent smell much, although I do love the smell of a good perm working, only downside is its slippy on the hands, but that's because I put it in the hair first then put the rods in so I know it's all coated for longer hair wanting a light curl too. About 2 mins of a bloody good rinse should do it, put on the neutraliser, let it soak in for a couple of mins (depending on length and thickness on the rod/ roller) take all rollers out, and I put a little more on for good measure, but dunno if it's nessasary, just preference, rinse, condition with anti oxy or ur alternate and done, still the same aftercare of 4/5 days of no washing, and colour 2 weeks after xoxo