I have multiple users working on leads and would like to automatically change the lead owner to the last user who updated the lead. 

For example, all leads come into Zoho CRM with the same lead owner. Our call center staff are not assigned these leads, so multiple people can be working on a single lead throughout time. 

I would like a function to automatically update the lead owner to the user that last called or had any activity on the lead. 

Is this possible through workflow rules or some other way?