Create a schedule in the rules programatically

We need to import schedules from a third party program/Excel sheet and load it into Milestone. Does the SDK allow this?

Yes, Config API Client shows how to do this, please explore the sample here -

https://doc.developer.milestonesys.com/html/index.html?base=samples/componentsamples/configapiclient/readme.html&tree=tree_2.html