the role as an account payable officer in a organisation?

Answer 1

That isn't an officer position. Accounts payable is done by a clerk or bookkeeper. The AP clerk makes sure the bills are paid when due after getting approved by purchasing department or officers. Some match invoices to purchase orders and packing slips but sometimes that is done in purchasing.
I do the AP on Fridays and do other duties the rest of the time as a bookkeeper. Writing checks is a minor part of the job for a bookkeeper but if you have a huge load some companies have one or more AP clerks.

Answer 2

It is an interesting job. You are required to keep the suppliers happy by paying them in time. But you also have to see if enough funds are available, before passing the invoices for payment. Sometimes both might not be compatible.

Good corporations usually have agreed terms, 30 day or 60
days etc and while attempt should be made to take maximum advantage of the terms, yet effort must be made not to delay payments and upset important suppliers. Some
payments might become due on pay day, which takes precedence over normal payables. Depending on the financial status of your firm, you might be performing the ball
game, ie throwing one in the air while catching another and trying none of them falls.

To refuse immediate payment is an art which you will learn over time. Good Luck!

Javed Iqbal Kaleem