IMP 3 Options Activation where?

[Superman]

Hi,

I just installed IMP3. I have seen using the demo site, that there should be
an Options tab in the menu after loggin in where user can set their from
address, their name as well as a number of other options. In my installation
this feature seems to be disabled and i cant seem to find an entry in any of
the configurations files to activate it. Could someone please direct me the
the exact place where to activate this.

Thanks,
Daniel