Changing the owner of a call

Changing the owner of a call

Am I correct in my conclusion that I cannot change the owner of a call in Zoho?
The field does not show up in the screen, nor can I make it show up as the systems does not give me that option.
I cannot "mass update" it either. I tried it, but Zoho refuses to change the name of the owner.

Please help out: how do I change the owner of a call.