We recommend to create the C:\TERA\GN4\relX folder where X is the version number, e.g. C:\TERA\GN4\rel6, with required subfolders to store a copy of the BIN folder and the add-ins sources to be recompiled. This provides for the local compilation of add-ins - when you change something in custom add-ins, and it allow you to do testing and compiling on an IIS or Back4 server, i.e. without disrupting its functionalities.

The required subfolders are BIN and SRC.

If using the 32-bit ClickOnce deployment on clients, in BIN folder expand the 32-bit version of BIN applications (from GN4bin.zip file). If using the 64-bit ClickOnce deployment on clients, in BIN folder expand the 64-bit version of BIN applications (from GN4bin_64.zip file)

In the SRC folder create the folder GN4AddIns and then - on the first installation - expand in it the system and the custom add-ins. After you did some changes in custom add-ins, do not replace them anymore with the default ones.

It is enough to have this folder only on one GN4 server as long you provide to have a backup of changed add-ins files in a safe place.