Well if its a women leading women its cool- you know she stands in a line with the other sisters etc. If its mixed then no. There is nothing which permits such a thing to occur. I believe men and women shouldnt pray next ro to each other because it could quickly become distracting. Men may be distracted by women and vice versa. Ofc women can pray behind men etc- like what happens during hajj/umrah. Sorry for the tangent!