Employee wage deduction and advances

Good day, 

Wish you could help. I have these two scenarios here please; 

Firstly, we have our new staff joined and we arranged his airflight ticket and few days accommodation to start in our other branch, employee wants to deduct the amount to his weekly salary pay in installments by $100 per week.  

How do I allocate the cost spent for his ticket and accommodation? Should I used the Expense account? or as liability account and what should be the right account name. Is this considered also a salary advance?

And what about in creating/posting his weekly pay in MYOB accountright with the repayments, should I put it as a deduction and put a negative amount (bottom of the employee pay card) or I have to create new account and what is that so. The deduction should be after his tax pay. No tax for repayments.  

2nd scenario: 

We have also our contractual employee (temporary) which we start giving advances to help him pay his personal loan and will be deducting the amount in installments from his weekly pay. How do I allocate the cost of advances and his repayments since he is not under our payroll. He's using ABN and invoiced us. 

Kindly advise. 

Appreciate any help. 

Thanks in advance.