In "Edit Motion Layer" you can set a pose as default (
Set as Default).
If you want your character to get into this pose somewhere else in the timeline, simpy click on "Default" in "Edit Motion Layer"
and your avatar will be posed exactly the same pose as "set to default" pose.
Be carefull if this pose is very different to the pose of the motion you use this.
You will have to click on "Reset" some frames later so it gets into the correct poses of the second motion.
I hope you get what i mean...
Rampa posted here in the forum a tutorial about this...
Toystorylab on Vimeo : 
Crassitudes (my "Alter Ego") on Youtube: 