Use SQL Database Via LAN using C# Windows Form Application

Question

I have developed an desktop application in C# and sql server 2008 R2
now i want my application to be access by more than one user at the same time access database.
That is databse should be on 1 PC (server) and application will be installed on other PCs (clients ) all connected in a LAN.
Now I want all user from different PCs(clients) can access the DB (on SERVER) and perform CRUD operations.

 

Please decribe how it work?