If the place is needed and there is no masjid, this is permissible.

In our area we have madarasah where we use to teach quraan to children in that place we use to conduct islamic lecture for ladies at every saturday after maghrib, now we planned to keep jumu’ah salah for ladies in that madarasah where we will not conduct five times of salah, Is it permissible to conduct jumu’ah salah like this? (first two row gents will be there)