I don't know the program, but options which are greyed out are usually so for two reasons.
Either.........On installation not all the options were installed, this includes a "Lite" or demo version of the program.
Or the installed application is not configured to allow this...... Or again, you are in part of a process which will not allow such a move at this stage.
Your best hope is to explore every bit of the Help menu or if there is an Options or Tools menu scroll thru' those.
The encouraging part is that at least the box is there even if it is a bit grey!