As salaamu alaikum wa rahmatullahi wa barakatuhu. If there is a barrier between the men and women in the masjid (women side, men side) Is the best row for the women for salat still the last rank or is it the first rank?

As Salaamu Alaikum wa Rahmatullahi Barakatahu.. There are now moveable walls about 7-10 feet tall that have been placed. There are black curtains in the windows.

Waillakum salaam wa rahmatullahi wa barakatuhu Yes there is, the men comes in from the back and the women enters from the front on Lancaster Avenue, there is a black curtain that separates the men and women sides