The system provides actions for stages such as "Create an order to the supplier", which allow you to create an outbound process for the purchase of goods.
There are also actions for creating a TTN, a sub-process, adding products from a parent process to a child, etc.
You can contact integrators
https://crm-onebox.com/en/partner/search/?tags[]=%D0%A1%D0%B8%D1%81%D1%82%D0%B5%... %D0%BD%D1%8B%D0%B9%20%D0%B8%D0%BD%D1%82%D0%B5%D0%B3%D1%80%D0%B0%D1%82%D0%BE %D1%80%20OneBox , I think they can offer you a turnkey solution for setting up such a business process.