There were four shifts each day, mainly the morning shift, the afternoon shift, the evening shift and the guerilla shift.
The morning shift started at 7 o'clock up to 1 o'clock.
Then, the afternoon shift started from 1 o'clock to 7 o'clock at night.
After that, the evening shift started from 7 p.m to 1 a.m dawn.
The last shift was the guerilla shift that started from 1 a.m to 7 a.m.
The guerilla shift would be the most dangerous shift for those in the shift because usually, the monsters were more dangerous at night than in the morning.
On the other hand, the beasts were more ferocious in the morning and afternoon.
Ainsley actually wanted to tame more monsters than beasts but considering that the unique charm ability could tame beasts faster than monsters...
This is quite a good arrangement.
Anyway, the guild members usually tamed monsters because the customers wanted monsters instead of beasts.