You can set up breaks between your meetings by adjusting your preferences under the 'Meeting Buffer' section through the following steps:
1). Go to https://freebusy.io/prefs
2). Next scroll down to the 'Meeting Buffer' section and you can will see the following screen:
3). After that select, as shown above, the amount of time between meetings that you would prefer: No Buffer, 15 Minutes, 30 Minutes, or 1 Hour.
4). Lastly, click the save button.