When an Event says, &quot;On each board: Either destroy 2 presence <i>(total)</i> OR ...&quot;, what does &quot;total&quot; mean?

When an Event says, "On each board: Either destroy 2 presence (total) OR ...", what does "total" mean?

That you only need to destroy 2 Presence on that board, not 2 per Spirit.
So in a 4-player game, if you choose the "destroy Presence" option for every board, you'll destroy 8 Presence. If a given board doesn't have 2 Presence on it to destroy, you must choose the other option if possible.