need a little UNIX help

I have trouble with an old 88k unix on an old Motorola VME (with a 197 MPU-card)...

When I run sysadm to setup e.g. my network I have a BIG problem... If you look at the pic I've attached to this post u'll see a screen-dump from my PC (I run the MVME through a parallel cable connected to my COM2 port).... there are 8 menu-buttons on the bottom of the picture... the first 4 i can access with F1,F2, F3, F4... and then I would think that the next 4 would be accessed with F5, F6, F7, F8... but no... and also not with F9, F10, F11, F12... so my quetion is this... how to I use the last 4 menu-buttons??? I can't save my changes etc. if I can't access them...
I know this is a pretty lame question but I'm used to Linux, not some old strange 88k UNIX (but still it's the old MVME r0x :D )