1992 Volkswagen Van Alternator removal

Engine Mechanical problem
1992 Volkswagen Van Front Wheel Drive Manual 280000 miles

Dear Car Pro's,

I have to remove the alternator from my Eurovan 1992, 5 cylinder engine.
How do i loosen the belt that runs over a total of 7 pulleys, in order to get it out?

The car is blocking my friend's driveway since now 5 days and i want to help him transport materials and tools.

Please help me with your information a.s.a.p..

Best greetings and Thank you in advance,
Walter