Thanks Milo, and
all others for your input
The group itself is private (95 members) and all people are known to one another. Loading the file(s) to the file section for the group is indeed obvious and will be done anyway. However the larger number of the members are not into computers / internet to the depth that they would be able to jump through the hoops to enable this. They are expecting this contribution and be looking to receive it in the least complicated way.
I'll do some experimenting with the files sizes and formats to establish what works best. Your information shared has been most helpful
Thanks again,
FOR