@Jo893 To do what you want you would need to create a second listing for the shared home. Just duplicate the existing listing and edit as appropriate. As a shared home you are allowed to specify that guests must be women only in your rules (and listing text).
Having solved that problem let e share a much bigger problem with you. Are you aware of the recently introduced new fire regulations that apply to your situation? If you don't comply you face unlimited fines and jail time which feels a bit steep as murderers get less!
Anyway have a look at the link and if you are the type of person who like to obey the law you can join those of us who are panicking about this
link: