If you use Salary's expense function and you have integrated with an accounting system, you can choose where the various expense categories are posted. You can create the categories you want yourself and map them to the right account where you wish to post the expenditure.
Go to Registrations -> Outlays -> Expense categories.
From this page you will see the expense categories without mapping:
How to map the expense categories:
Click on the pencil next to the expense category, you wish to edit. In the box, you can change the name and map it to the correct account:
The outlays will now be posted on the chosen accounts.