The ability to open an unlimited number of charts and encounters is available in Practice Fusion.
If you have multiple charts open simultaneously, you can view additional charts by clicking on the ellipses icon in the upper-right corner (shown above).
Closing multiple charts
Click on the ellipses icon in the upper-right corner of the Charts section, then select Close all patients.
Note: While this functionality is available, >5 charts will need to be open in order for the 'Close all patients' option to display.