Using cui with freeradius

Hello I want to use cui in freeradius i searched wiki but there is no documentation about that ( or icant find it) in google i find some topics but they are all talk about eduroam . Is cui available in core package or i need to install it manually ? how can i find a good toturial about that ? i tell about my problem before in mailing list but again : i have 4 device authenticate with 1 username to get daily 4G bandwidth but each device get 4G bandwidth means 16G daily i think cui maybe solve my problem