hotspot login user

i have create 2 user login,
example:
#user (A)
#user (B)
and also i have create hotspot for ip 192.168.7.xxx

and the questions
i want for ip 192.168.7.10 - 192.168.7.50 using #user (A) this range ip can’t log in with #user (B)
and for ip 192.168.7.51 - 192.168.7.254 using #user (B) this range ip can’t log in with #user (A)

i cant set up like this, i only can blocking andy bypass at ipbinding, i do not want like this, anyone can help my trouble ?