ftp access & permissions

[H. Bartel]

Hi,

I have set up an Apache Server with FTP Access for Users A, B, C & D. All users are chrooted to a specific folder inside the Apache root. Now there comes my problem:
If User A makes a new directory, User B, C & D are not allowed to access or modify it. This happens with all the other users vice versa. How can I set default permissions for the specific dir recursively, so that all users can access and modify all folders, no matter who the owner of the dir is?

Thanks in advance,
Holger