evocations are not supposed to be done on a whim. You must regard it as something sacred, prapare fon months for it and make sure all is in the right place. When you treat evoking each of these spirits like the most important job interview of your career or meeting the Pope, there is little chance you might leave anything out.
Women? The grimoires are written by Christian priests, who were supposed to be chaste. It s obvious why the interdiction is made. I believe that the reverse would apply to women, no men.
i disagree, women were supposed not to be present because the christian priests thought of them as being "base" and unclean especially during menstruation. i do think you can safely have a mixed gender team. though i would avoid working during menstruation, but the female forum members are far more qualified to comment on that than me.
and it would be good to say WHY evocation should be treated as something really important. because if it is in your mind...the most important thing ever, you will charge far more than if you do it casually! in my experience wanting something, mulling over it for days, how and what youre going to make your charge forms a lot of the contact and can even result in the spirit coming to you before the ritual.