To set up Neto your will need a Neto login.
Firstly Log into Neto normally at https://www.<yoursite>.com.au/_cpanel
In your Neto Control Panel, go to Settings & Tools > All Settings & Tools > API Settings
Get the APIKey for the user you are logged into
Fill in the information below
Store URl = https://www.<yoursite>.com.au/do/WS/NetoAPI
UserName you used to generate the key
ApiKey from above