I import my figures into an empty Bryce scene, ungroup, then use the Tab button on the keyboard to step through every object individually. I get all my materials set and regroup the figure.
Next, go into the attriibutes and name the character something like vickisitting instead of group1. I save the character and the bryce scene in my bryce work folder usually as the same name" Vickisitting" whatever.
Now select the vickisitting character in the bryce scene. Press the Ctrl and the C buttons on the keyboard to copy the character. Go to the disappearing menu at the top of Bryce. Click on file and pull down. The bottom of the pull down menu should have the names of the last four bryce scenes you worked on. Click on the name of the scene you want to paste the character into. Bryce will ask if you want to save changes you made in vickisitting.You should just have saved but it hurts nothing to say yes and it could save the last hour and a half you just spent fiddling with vicki's translashes.
Your new scene should open up. Press the Ctrl and V keys together. The group vickisitting should appear as long as you didn't close Bryce. 
Scale and position your character into the scene. Save the changes to the main bryce composition. When I work I like to number the files name01, name02, etc. Poser files with hard bends can cause clothing to poke into the nude figure. The render can start crashing when these meshes overlap and penetrate each other. Number the filenames so you can go back to the previous version and try  again when you make major changes to the scene.