Discarding false title, this Order WORKS FINE as supposed, SinglePlayer generally is intended for one dude player and nothing like a bot, in MH (with bad raw codes) we can have some options which are not a hard task. Like Jack said you can use a child titan coded different or... a simple coded one with default animation for Sitting and default order "sitting" and... spawning in a spot. Then... spot will have a decoration as a Titan. Trigger hides this (propertychanger here) and spawning that "default sitting" titan. I gotta admit I'm interested to try this thing. But I was loving more that SwarmTitan - that is a real nice surprise if is well configured in environment under a nice mask (except the HUD from some MH types showing everything and ruining the surprise - mine included but still configurable here...)
The problem if this do works as supposed (I have mods where monsters reacts at Bot like to player):
In a map with "SittingTitans" even in title, those were intended to get up triggered, The faith made the monster triggerer to be killed by some acid zone Instigator being None. Map was broken because a Titan from chained group was not getting up ever due to Instigator missing from stage, Map went broken thanks to that dumb configuration idea. So to speak hazard zones (acid, lavas, etc described by MH lord aka Shrimp) combined with counters and such might have chances to break so it's a stupid recommendation heading nowhere. For such reasons I did not counted "servants" from Sk_Godz map because I don't need complaints about "not working", some bad-ass zones allows monsters to be killed by... environment and then will break any counter (I should use my counter...).