I believe this is referred to as 'group or partner explorations'. Prior to the meditation, the out-of-body exploration group or partnership create a target destination - a physical time & place - where you will meet while traveling out of body.
I suppose once one is better at this technique, they may be able to show up in a person's dreams that isn't expecting it. =)
Kell
[ January 29, 2002: Message edited by: KellKell ]