Advice need on registering a few type of transactions!

Advice need on registering a few type of transactions!

Hi, 

We use Zoho for a while now, but I think a few things we have been registering them the worng way, so we would like your advice on how to register a few trasnactions.Our company is a tuition company so in plain words it receives money from students and sends payments to tutors while keeping commission.

1. How can we record payments sent to a tutor?   Ideally this should just be an accounts payable transaction. Once a payment is sent this means that we do not owe the tutor any longer (i.e the account payable with this tutor is cleared).  If a payment from a customer is partly a sale and partly a liability to a supplier (i.e an accounts payable). How can this transaction be recorded?

2. How should be we r ecord a bill/expense when it is not tax deductible? 

We also have a project we run with a partner company. What would be the best way to record:
a. An expense made from our partner? (we obviously have to sent them over half of the amount that expense to the partner as expenses are shared 50-50) 
b. An income that has been sent to our partner? (sales and profits are shared again 50-50)  50% of money that our partner receives need to be shown as account receivable.This case is also similiar to the tutor case mentioned before, because when we receive money for a sale from the project, 50% of it will go to our partner. 

Thanks in advace for your time and support! Hope to hear soon from you. 

Best, 
Ledia