xfce4-session, if possible to preset more sessions manualy

[lists_mk at wujiman.net]

hello everyone.
  and i have another funny thing. is it somehow possible(without bending it
around a four dimensional micky mouse) to preset a few xfce4-sessions? 

there is one preset, the Failsafe session. is there any way to add another
preset session into the configuration? if i delete all the saved sessions in
~/.cache, i would get back to the defaults? 

thanks
martin