Pose tools didn't work

godless1893

I'm new to Daz3D and I wanted to import poses after I import the figure to blender, in this way I can keep the default pose and change another pose at any time without importing the figure again. I thought the pose tools panel can do this, but when I switched to pose mode after importing the  figure, select all bones and imported a .duf file, nothing happened. The pose worked well with the figure in the Daz, I have no idea how to use the pose tools. I can't find a manual or video about it.