1. Driver Installation
The printer drivers can be downloaded here. Mount the downloaded .dmg file by double-clicking it. It should then be shown in the Finder sidebar and on the desktop. Open it, then double-click the .pkg file in it. Follow the installer app.

Open System Preferences, then choose Printers & Scanners.

Click the „+“ symbol, then the „IP“ symbol and enter the following information:

protocol: Internet Printing Protocol - IPP
queue: /printers/km-color

In the line Use, choose  Select Software… . In the next window, choose „Konica Minolta C454e“.

2. Papercut Client

The PaperCut client software is necessary for printing and gives an overview print credit and various other information.

The program can be downloaded via this link. After instaling, start the app
Security settings in macOS might prevent you from starting it. In that case, go to System preferences - Security. In the General tab, click the lock icon and then enable starting the Papercut app.
After starting the app, enter your Uni account name and password and check off the option to store these credentials.
The small PaperCut window should now show the remainig print credit.

3. Printing

Note: Before sending a print job, check if "Color" or "Gray scale" is selected. The default configuration is color, which might not be wanted and can lead to higher cost per page.
After sending the print job, choose the user account to be charged. Now you can go to any of the multifunction printer in the printing center, corridors or the library. Touch your card to the card reader on the printer and choose from the on-screen options.

Choose "Print Release" and the one or all of the print jobs from the list.
At this point, you can still change from color to grayscale and from one-sided to double-sided printing.
Choose "Print". The print jobs will now be printed. Don't forget to log out from the printer.