DISA Block International Calls for some users

Hi All,

I configure DISA to 5 of or clients but we don’t want that 3 of them can call international via 9001 + number#, I can see a disa-1.conf and so on 2,3,4,5 in my /etc/asterisk, Do I have to make a custome context on each file?
if so can you guys have and example: