Connect from distance!

[Carstea Catalin]

How can i "share" ( with chmod for example ) for only some users ( web 
programmers ) only one directory where they can put his web pages.
 Ex : "share" : /var/www/html/dir1
for user1,user2,user3 
If user1 make ssh on my server he can view,read,modify,remove only files 
from /var/www/html/dir1
..............................................................................................
Tks!
 If exist another solution for my web programers ( secure solution ) to work 
from distance on my web server please tell me. 
 

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Carstea Catalin