Paras had got the Bartan (Utensils) duty with Shefali... and none of his friends/group stood up to take it on his behalf. Vishal did.
Vishal had already chosen Rashmi to be his partner, also citing that Shefali only does rotis.
Who is Shefali to suggest that Paras should make Rashmi swap as well, so that she, herself gets saved from the Bartan duty? And why were the others (including Paras) were so okay with that thought?
Vishal didn't have to do it for Paras. He did it out of concern and goodness of heart. A favour, if I may call that. But the cunning Shefali... she wanted to make the best out of that situation too.
Shefali went on moping about her duty until Mahira said that it would give her a chance to put Rashmi on her toes with the Breakfast timings, etc.