Question:

How to show the linked DWG file automatically on shared model when offices that are in different location using two different firm folder.

Answer:

Consider there are two user (A&B) working on shared model from different location and having different firm folder path .User (A) can link the DWG file from the Firm folder which in his local machine .

After linking the drawing, change the file name syntax as " .\Drawing name " instead of  "C:\xxxx\yyyy\Drawing name " and modify the DWG path as shown below. 

Once the modification are done as mentioned above ,user(A) can "Write out" the changes . When user(B) perform the "Read in" , the linked drawings will be automatically read from the User B firm folder which is in different location.