Users need either See Folders or See Files permissions at the top level of the shared volume. Make Changes is not relevant in this situation.
AppleShare administrators may want to consider several strategies for the top level permissions.
* Create a group that includes all users who can access a volume, and give that group See Files and/or See Folders in the User/Group level.
* Set everyone to See Files and/or See Folders at the top level, and then provide security to each folder in the top level.
For more information on determining access levels, see Tech Info Library article "Macintosh: Determining File Sharing Access Levels."