If you have a public or partner application, you will need to have a button or link that users click to create a connection.
We have provided some sample Xero branded "Connect to Xero" buttons which you are welcome to use, which can downloaded here
If they do not fit your particular requirement, please do not try to incorporate the Xero logo into your own design - in this case it is best to use your own non-Xero branded button or a text link.
When you're creating your application you need to provide a name and url for your app. There are a few guidelines to follow:
The application name is used in the following areas:
Xero add-on management panel showing how "Application Name" & "Company URL" are used within Xero
Xero application authorisation screen showing "Application Name" and "Company URL".
Xero history shows actions by API applications (application name is shown).
Certified app parters have some additional branding requirements. Details can be found here.