Adding to the Activity Stream, On Behalf of Another Account

Adding to the Activity Stream, On Behalf of Another Account

Hey everyone,

I have an application that makes changes to our Zoho Projects through a Developer account. Changes made through the application come up on the Activity Stream as "developer", which is working as expected.

I have two questions:
Is it possible to make adjustments on behalf of another account, using their Zoho ID?
      - ie. Instead of the "Developer" account adding a Task, set that "User X" added the Task
If not, is it possible to make adjustments to the Activity Stream on behalf of another account, using their Zoho ID?
      - ie. "User X" made an adjustment to Task Y

I'm assuming all activity stream changes are handled automatically and not available via the api.

Thanks