When dealing with multiple processes, it is helpful to group processes so that a change made to one process is applied across all processes. To group a set of Processes together, make sure that they are all selected and navigate to Edit -> Group Selection or hit Ctrl + G to group the process together.  The name of the group can be changed by double right clicking on the name.

In the example, there are three different Processes defined. Each process controls a specific tool is assigned to particular 3D models (one of a series of concentric rings - the purpose of the rings is to check the alignment of each of the FDM extruders).

Once Processes are grouped, any change made to a Process will also make the same changes in the other processes. (This is important, because settings for every tool are included with each process).

For more information about grouping Processes, checkout the official Simplify3D grouping tutorial.