Hey there

Yes reservation criteria is available in IIIT Allahabad different categories. However there are no details about reservation for General EWS. Mentioned below are the reservation for other categories:

• Schedule tribe 7.5%
• Scheduled caste 15%
• Other Backward categories 27%

Candidates of SC & ST categories do not need to pay their tuition fees. They can only pay admission fees and Mess fees,  & hostel fees. There is also quota for physically handicapped students, Kashmiri Migrants and Defence.

For more:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/university/indian-institute-of-information-technology-allahabad/amp&ved=2ahUKEwj8juLwoI70AhWPzzgGHVcxDbwQFnoECAoQAQ&usg=AOvVaw1lm_xsfhd1-AeteDcnYdxd&ampcf=1