The frequency of payment of the 13th salary for the people who are entitled to it is defined in the company's settings for the whole company.
However, it is possible to deviate from this if some people need to be paid at a different frequency.
Example below, 4 times a year :
For hourly paid employees where you want to pay him every month, just check the 12 months.
If you don't check any box, the program will apply the company's standard.
ATTENTION THIS OPTION IS NOT AVAILABLE IF YOU HAVE CHOSEN TO PAY THE 13th SEPARATELY IN THE COMPANY SETTINGS