The catalogue includes all the resources that are potentially accessible through all the parts of the service that you use - for example if you are not in the UK, you will not see the resources that are only available through the UK Access Management federation, and if you do not have the managed proxy service in your subscription you will not see any of those.
There might be resources, or things you want to treat as resources, that are not in the catalogue and that you want to appear for your users in places like MyAthens though. This can usually be achieved by adding custom resources.
What kind of resources am I going to want to add?
There are four main types of resources that you might want to add as custom resources:
1. Resources that use other authentication methods such as a shared username and password
For these, you might include the shared credentials as information in the description.
They will not appear in statistics reports.
2. Resources that use no authentication but that you think may be useful to your users
Examples might be publicly available research or information services from governments or learned societies.
You could also use custom resources to add links to library catalogues or help pages this way.
They will not appear in statistics reports.
3. Copies of existing resources with modified names, descriptions or target URLs
For example where a resource has several possible landing pages for different journals. See also