IBS or any other top B-schools do not provide a special course in operations management, there are a few colleges for dedicated Operations Management but if we talk about IBS Pune or Mumbai campus then the curriculum goes like this

First year will be common for all the students where they will teach you aspects of Finance, Marketing, Accounts, HR, Quants and few other programs. In the second semester you'll get to know about Operations management, deeper concepts of Marketing,finance, economics etc. In the second year you'll have to choose from the subjects given choice of. Our of 7/ subjetcs, you'll be able to elect 4-5 which can be from Marketing, Finance, HR or Operations. You can either go for all the subjects of a same domain or all 5 different subjects. But the story takes a turn during placements- 90% of the companies will be there for Marekting/sales, Finance jobs and rest will be HR and then a few MIGHT come for operations. So, opting out opertations is your choice in IBS or even IIMs but point concerned is the placements.