That's very helpful chaps, thanks.
e-allocator would appear to be £5.75 per month + vat, whilst ABS is £45 p.a., so I guess I know which is preferable out of the 2 costwise. Google calendar refused to load on my iMac for some reason...
I'll approach the group committee and see what they think - as I'm going to do a website for the group, I guess I know what job will be coming my way in addition!
Cheers,
WW