@preshan.govinder, by lists I guess you mean instrument lists ?
If yes, please see the REST Tutorial 10, which explains how to create lists and add items to them with HTTP calls in Postman. There is also a Java sample called DSS2Instruments, available under the downloads section which illustrates this and more around instrument lists. And there is a .Net C# example as well, described in the .Net SDK Tutorial 2.
For more information on the API calls to manipulate lists, see the online API Reference.