@Lokesh Chiru Plz see rhp basis of allotment.
You can further check basis of allotment of past few SME IPOs available on Chittorgarh where retail was subscribed more than NII.
E.g. Cell point was subscribed 4.11 in NII and 7.92 in retail, overall 6.03,
After five days when allotment is out, you will see that NII will get allotment in the ratio of approx 1/6,
Retailers will get by lottery in the ratio of 1/6
Past example Arham tech
Retail was 420
NII was 480
But allotment to both the categories was done by approx 450 times