How to speak to the companion

From what I've been able to gather this was an attempt by Zash to both take your body and gain access to Khem Val as her servant in doing so.

As it seems she is afraid the ritual may disrupt the bond between you and Khem, causing it not to serve her, if he is not present during the time the ritual is performed and still bound to serve your body. This would also be why she did not want andronikos present as he would not end up bound to serve her in your body and would simply flee or attack openly instead.

Before the battle aswell, she claimed that the bond between you and Khem Val was strong. The Dashade could be a useful ally.

I'm not sure if this is exactly what you were asking or not, but either way I hope it's helpful to you or anyone else following up on this article.

By habit, I have positioned my clickies on the right of my character, on the presumption that the companion would take a position on the left. This is the behavior of the pets in World of Warcraft.

A little experimentation shows that pets don't behave this way in StarWars TOR. When you change your position, companions path to the closest point on a half circle behind you.

o  x  o
 *   *
  *z*

If they're coming from behind you, they are likely to stand right behind you(z) and obstruct your clicking.

If they're coming from in front of you, they'll choose one of the side positions(o), which might leave your clicking clear if the clicky is on the other side.

Just face your companion, and step back one tap.

If repositioning the companion this way doesn't work for you, another idea is to keybind the camera controls. ZoomIn, click, ZoomOut. I recommend F and V.

I do not recommend fighting in first-person cam (many effects do not appear, such as your own gunfire).