Applications in authentik are the other half of providers. They exist in a 1-to-1 relationship, each application needs a provider and every provider can be used with one application.
Application access can be configured using (Policy) Bindings. Click on an application in the applications list, and select the *Policy / Group / User Bindings* tab. There you can bind users/groups/policies to grant them access. When nothing is bound, everyone has access. You can use this to grant access to one or multiple users/groups, or dynamically give access using policies.
Starting with authentik 2022.2, you can use placeholders in the launch url to build them dynamically based on logged in user. For example, you can set the Launch URL to `https://goauthentik.io/%(username)s`, which will be replaced with the currently logged in user's username.
If the authentik server does not have a volume mounted under `/media`, you'll get a text input. This accepts absolute URLs. If you've mounted single files into the container, you can reference them using `https://authentik.company/media/my-file.png`.
If there is a mount under `/media`, you'll instead see a field to upload a file.
To hide applications without modifying policy settings and without removing it, you can simply set the *Launch URL* to `blank://blank`, which will hide the application from users.
Keep in mind, the users still have access, so they can still authorize access when the login process is started from the application.