AMG will be able to run multiple client connections from the same IP with different users.
All you need is to copy the attached config file in to the AMG Client software's default folder. (typically in C:\Program Files (x86)\AMGtime\AMG Attendance System)
Make sure to replace the existing file while the software is closed
Use AMG Attendance System file for 2.4 software and under
Use AMGtime file for 3.0 software version