For MMS prog, will my admission be just based on CAP allotment by DTE or do I need to seperately apply for SIES and undergo GD & PI?

MMS admission are done through DTE i.e CAP rounds as you mentioned. However, SIESCOMS does have ILS ( Institute level seats ) for which you will have to keep a check on the SIESCOMS website for the availability of the form which is mostly available when minority forms are out. Once made available on