Internal Review can be started from the Versions spreadsheet by selecting the versions you would like to review and then right-click on one of the highlighted items and choose Play (It will launch your Preferred player ) or Play with... (Giving you the possibility to launch your other enabled players)

Tip: You can enable players from the System Settings > Review & player > Settings.

Alternatively, you can make a List from multiple versions by right-clicking and selecting Lists > Create from Selected, naming and saving the List by clicking on the Create button, and then opening the List in the Player.