Import your obj file (or other format on the import file types list) which is grouped for materials and/or uv mapped . Apply textures. Save to poser library. 

1. geometries should be in runtime/geometries/[your vendor name] folder
2. texture images should be in runtime/textures/[your vendor name] folder
   3.save to library in [your vendor name]  folder 
3. check geometry is not embedded (depends on the store rules)
4. for figures set pivot points , joints etc and save again to folder
5. Make any mat poses/ poses/ camera and light sets and save them .
6. Move a copy of everything to a c:runtime folder, keeping the runtime folder structure
7. Make a readme file - names [vendor]_[product]_readme.txt  containing product name
   description, any hints or restrictions , useage statement , copyright statement etc etc
8. make a zip file from the c:runtime saving folder path info

Using a c:runtimeetc folder makes it easy to create a zip that will etract to the right place.