Developers can select sections of units from a base

- For a given spawn type (agents, infantry, etc.), developers can distinguish between and select sub-classes
- For example, developers can easily select only the units created from `Camp1_path` and ***not*** `Camp1_static`.
```cpp
class infantry
{
class Camp1_path
{
numberOfUnits = 25;
unitsPerGroup = 5;
canPath = ON;

positions = "Camp 1 Path Spawns";
dynamicSim = ON;

class reinforce
{
id = "Camp1_Pathing";
canCall[] = {
"Camp2_path_1"
};
};
};

class Camp1_static
{
numberOfUnits = -1;
unitsPerGroup = 1;
canPath = OFF;

positions = "Camp 1 Static Spawns";
dynamicSim = ON;

class reinforce
{
id = "Camp1_static";
canCall[] = {
"Camp1_Pathing"
};
};
};
};
```