You may need an agent to have a little time after a call to write up notes to the CRM you may be using. The process of this is call wrap up time, and will allow a short or long period of time between calls to ensure the previous call is complete.
To activate this setting, sign into the dashboard and open Configuration > Call Queues
Then open the queue you wish to have the wrap up time added to, then head to the section headed with Agents. You will then need to change the box marked Wrap up time: to the number of seconds you require. E.G. 15 for fifteen seconds.
Scroll to the bottom of the page and press Save