Every time I copy files to a directory I am unable to edit the files. Why? The user is part of the group that has permissions to edit. The user can create and delete files but cannot edit files that are copied to the directory? 
have you got any code/output? that we can look at?
Start with:
ls -al .
This was what I needed to run:
setfacl -m d:u::rwx,d:g::rwx,d:m:rwx,d:o:r-x groupshare
All is well now. Thanks.