Quote - One last question because I'm not sure about it. The procedure 'memorize zero position'.. What does it mean and how to do it?

Load your figure into a blank Poser document; don't conform it to anything. Open the joint editor and zero the figure. Also check the body and hip parts to make sure there are no translations or rotations set in there. Then from the Edit menu go to Memorize > Figure. That "locks in" the zeroed starting position into your CR2, so finally you need to save that figure back into the library.