Thanks a lot @Mohammad for answering my question. Well I figured a way by have a structure for markup, in which the main office be the organisation and others be the sub-organisations.
The google business is all set up. I want the website to get display in local listing in search results.
Like if you search for "python training in bangalore", I want the website to get listed in the map locations of different businesses in the search result.
Moreover, I am using JSON-LD markup script not microdata, should I add the script for local business on every page or the website?
Thank a lot for your reply, looking forward to get some more help .