You should still be able to do so when you first load in. When you get to the map screen for the first time you (as the commander) can click on a start point for the HQ

is there something you need to do in order to change the location? i have not figured it out myself yet.

It should let you on first load (fresh save etc.)
Otherwise you can move HQ through HQ management (on Petros as of 2.1)

OK, I found what I was doing wrong. On startup I needed to go to Parameters and change Persistent Save to NO, so that I would get a clean start. Otherwise it would bypass the map and ability to select new location.

@Meerkat, I did try to move HQ through HQ management yesterday but it was wonky and would not work. It placed Petros in my squad but not able to jump to new place in map. Maybe it is expecting me to walk to the new location, I did not try.

I wish there was more base building in this mission.

You are supposed to travel to the new location.
For base building, you can, with an engineer and/or toolkit, build some barricades and bunkers.

引用自 Meerkat：

You are supposed to travel to the new location.
For base building, you can, with an engineer and/or toolkit, build some barricades and bunkers.

Cool will try that. Thanks for fast replies!!

引用自 Meerkat：

You are supposed to travel to the new location.
For base building, you can, with an engineer and/or toolkit, build some barricades and bunkers.

I restarted and hired an engineer. Petro killed him. Not sure why.

I also re-started and hired a medic, and Petros killed him.

Interesting, It sounds like either the wrong unit is spawning (what mods are you using) or petros is flagging them as enemy for whatever reason.

引用自 Meerkat：

Interesting, It sounds like either the wrong unit is spawning (what mods are you using) or petros is flagging them as enemy for whatever reason.

Yes it appears that it was a mod, though I play with very few. After removing a few, Petros is no longer a lunatic killer.

The following were removed - for reference if anyone has this issue:

** The_Unsung_Vietnam_War_Mod
** RKSL Studios: Attachments v3.01
** Extra RHS Uniform Retextures
** RHS Extra Units pack

RHS extra units pack maybe could have been the cause, but that would have to had changed one of the units set by RHS

引用自 Meerkat：

RHS extra units pack maybe could have been the cause, but that would have to had changed one of the units set by RHS

It's working fine now. Thanks for following up. I didn't need these anyway for this mission. So all is good. AI still on steroids when in SP. :)