In the default nUI distribution package, Recount and Omen3 are integrated into the information panel (right end of the dashboard) as separate pages within the panel and the player must choose one view or the other. This optional plug-in combines Omen3 and Recount (Preservation) into a single information panel page which automatically switches between displaying Omen3 or Recount based on whether you are in combat or out of combat.
While out of combat, this plug-in will present the Recount (Preservation) window on the "Stats" information panel. As soon as the player or the player's pet enters combat or gains agro, the "Stats" information panel will hide the Recount window and display the Omen3 window to help the player manage agro in combat. As soon as both the player and the player's pet leave combat, the "Stats" panel will switch back to the Recount display.
This plugin requires that you have the nUI core mod installed.