How to use dolibarr correctly?

hello, I want to ask how to use dolibarr correctly if it is implemented in the company? For example, if you want to buy raw materials from a supplier, does the company employee input the purchase order, validate orders and receipts or give the supplier a dolibarr account so that the supplier can validate the order? thank you

Hi,

Please check this : https://www.youtube.com/watch?v=OkbncQwiWIw

thanks
yesbee

Thank you very much sir