While we hate to see anyone move a domain away from us, we do understand that this may be occasionally necessary.
You can obtain your transfer authentication code as well as unlock your domain by browsing to the following, once logged into your Webnames.ca account:
Navigate to My Account > Manage > Domains
Click on your domain name
Under the Domain Actions section and Transfers, click on Auth Code
Proceed through the screens to obtain your Transfer Authorization Code and Unlock your domain.
A new Transfer Authorization Code will be generated each time one is requested, and for security purposes will be rotated every 90 days, provided a transfer of the domain is not currently in progress.