If you are the company administrator, you can access the company settings via the menu in the upper right corner. Once there, click on the tab 'Advanced.'
Use the 'Alternative login-button' and you will go to the menu where you can set this up. There is also a short guide to do this, and a link to download a comprehensive user manual.
We advise to have this done by your IT department. If they run into any problems, or have questions, they can always contact our helpdesk.