Hello Aspirant,

JoSAA follows top to bottom approach,that is your first preference is checked first then second,then third wherever a seat is available that seat is fixed without checking the bottom options.If you want to go for lower branches then you should place them first in order of preference.

I would suggest you to place your first preference first,as per this approach don't get the wrong idea that first preferences of every students is checked then second preference and so on.First rank wise a student is selected his preferences are checked then  alloted and then they move on to  next student.

Regards