In order to use your company's employee app, you need the correct company URL.
You can find this, for example, on your user data sheet or on promotional or information material about the employee app. Alternatively, ask your colleagues or your supervisor.
The URL could look like this: sample-company.flip-app.com, sample-company.app, app-name.sample-company.com, app-name.com...
Once you have found the correct URL, you can install the app as follows: Installing the employee app