Hello there, @Miguel78.

You can create a journal entry to enter your employees' third-party payroll information. Let's first make sure to create the necessary expense accounts use to track your payroll expenses. Here's how:

1. Go to the Lists menu.
2. Choose Chart of Accounts.
3. Click the Account drop-down arrow.
4. Select New.
5. Pick Expense. 
6. Enter the account details.  
7. Click Save and Close. 

You can repeat the same steps to create all the necessary accounts for each payroll income, deduction, contribution and liabilities.  

Once completed. you can now create a journal entry to record your employees deduction, contribution and liabilities.

1. Go to the Company menu.
2. Select Make General Journal Entries.
3. Fill out the fields to create your journal entry.
4. Make sure your debits equal your credits when you’re done.
5. Click Save or Save & Close. 

Also, I'd recommend consulting with an accountant so you'd be guided in making you've assigned the accurate accounts. 

Keep me posted if you have other questions about tracking your income and expense transactions in QuickBooks. I'm always here to help.