Plan A!

Default behaviour. 
Attack nearest enemy. 

Get ready!

Unjam weapon, reload weapon, recover, concentrate (if psyker) - in that order. 
Stay at your current position, wait for the enemy to come into light of sight.

Stay close!

Stay close to the player controlled character. Attack noticed enemies if it is possible without moving away from the player controlled character.

Hold position!

Stay at your current position. 
Attack noticed enemies if it is possible without moving away from your current position.
