The *single checkmark* will "Change Figure" ... That is, it will **replace** the selected figure in the Document window with the selected figure in the Library.  But, BE CAREFUL ... the new figure from the library will keep the old name of the figure that was replaced (in Poser 7 anyway).

If you want the new figure to have it's own name (as shown in the Library), delete the first figure and then use the double checkmark to "create New Figure."

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019