"Old" model 1P that I still have works in this way: 1 short click on open button to open driver door and 2 short clicks to open all.
Holding opening button will open door and windows until button is released.
Holding closing button for a while will close windows and mirrors. It will not stop even if button is released.
In that case I think you want the comfort mode (Its been a long time since I got this on my car so check it out).
On my car:
one click opens driver door (this is set in the menu settings and can be drivers door or all doors)
Holding the button will then open all the windows
Single click locks the doors and holding click will close all open windows.
Mirrors can be configured to close on the first click under different coding.
Opening and closing the windows comfort
With this modification will get the opening and closing windows in comfort mode.
1 - Electronic control module 09-. Code (31347)
2 - Adaptation
3 - Select - Control Access 2
4 - Sub - Comfort opening
5 - Change value to Active
6 - Sub - Menuesteuerung konfortbedienung einstellbar
7 - Change value Adjustable
8 - Sub - Funk konfort oeffnen
9 - Change value to Active
10 - Sub - SAD konfort oeffnen
11 - Change value to Active
12 - Sub - Comfort closing
13 - Change value to Active
14 - Sub - Funk konfort schliessen
15 - Change value to Active
16 - Sub - SAD konfort schliessen
17 - Change value to Active
Don has done a nice screen shot for the MK7 Golf which is the same here
obdeleven.proboards.com/thread/586/comfort-windows-obd11-instructions
