To create a new entry, go to Finance > Finance vouchers > New entry.
Define the number series to apply (you can create additional number series under settings), the booking date and the rest of the information. Each line corresponds to an accounting entry.
Once you enter all the necessary for your salary breakdown you can save the template, this will enable you to select the template each time you need to process your salary information.
Example of payroll record:
This short video takes you through the process of creating your salary journal and saving the template:-