Linux ftp give access to user to another home folder

Hi there

Hi created on my ftp server user

useradd -m -s /sbin/nologin user1
then
I go to hi home folder to give him access to another user
cd /home/user1
then
ln -s  /home/user2    to give access user1 to home folder of user2

then I go to /etc/group

I edit user2

user2:x:572:user1

Ok now I open the ftp site log has user1and I should be able to see and have access to directory home folder of user2 but I still get an access denied

I go to cd /home/user2

chmod 750 on user2 home directory but still I get an access denied ???

Does anyone know how to log on on ftp site with one user and have access to another user directory ?

thanks all