The first thing to do is to associate the supplier. If the supplier is not already present in the system, it is necessary to create a new one as per guide.
Once you have searched for the supplier, in order to generate the credentials to send to the Channel Manager you will need to click on the Users button to proceed to create the user. The related screen will open:
The fields to be filled in are as follows:
Click on Confirm to save the entered information.
Once created it will be necessary to click on the "Send passwords" button to send the credentials to the supplier.
Please note the user is not connected to the contract or even the Channel Manager, but to the supplier. One account per supplier/hotel is enough to operate in all contracts via API.