Random Salt

i am using hashcat in distrubuting mode using 2 pc for one phone

on is trying the salt from 0 to 70 % and the other from 70 % 100

is it possible to use random salt in this range or is this by default

Random salt take much time for process restart. Possible most efficient way is to mix salt like 0009010203.... If you know that for some models code usually ends at 0 or at 9.