How to Create API Key using API Call for multiple users ?

Each user should have their own API key.

If you need to post content as multiple different users from an application, you can use an Administrator API key, and then use the impersonation feature to post and get content on behalf of another user.

Hi Alex ,

Thank's for the reply ..

Actually  i just need to change the author of MediaGalleryPost at the time of uploading the photos in MediaGallery(using API call)..but by default it's updating MediaGalleryPost Author by the Name of  Main Administrator of Community server.

So i am trying to change the API Username and key for the same.

Or is there any ways to change Author of MediaGalleryPost using API call?