In poser is same. You have to save it as a figure.

Easiest is to create a new external Runtime and there save a copy of all files your figure refers to and that you want to include in the package. Typicaly this will be the geometry file and the texture files. Open your figure from where you placed it and check the loaded texture files. Make sure all materials refer to the texture file in that new folder. Save toyr figure in the new library you made. Close Poser and open the .cr2 file in Wordpad. You will see that the referred geometry file (.obj) refers to the location where you initially placed it. Fix that reference. Search for other occurrences of '.obj' in the file. There is a second reference to the .obj. Fix that one too.

Search the file for occurrences of '.jpg' (or other file types when you used those) and check that all refernces are to files in that Runtime.

Add readme's and promo material, auxiliary content as you see fit to the Runtime and finally zip the file which you submit.