[Zoochy]

I realize that the Libero can not be on the playing court for all rotaion of services. Thus, can they be designated as the floor/playing captain? Thus when s/he is not on the court there will be a different captain until the Libero re enters onto court.
Rule states that Libero can be 'Team Captain'. Then there is another rule that talks about floor/playing captain. Is there a difference?