Surbhi – Download chrome rest client from below link.
chrome-extension://hgmloofddffdnphfgcellkdfbfbjeloo/RestClient.html#RequestPlace:history/130
After above step, you can use the attached snapshot to further proceed. Please let us know if you come across any issues.
As you are new to webMethods, better go through REST development guide to understand more on it.
Thanks,
