This is the “true” Eden way of adding emitters, via an entity's attributes.
Not all entity types are supported (those on which it would not make sense to have these attributes).
Map objects are also not supported. It is not possible to edit the parameters of these emitters from within the attributes, but it is possible to edit them via the Emitter 3Ditor after setting them up.

So, let’s pick for example the BMP2 Wreck (Props → Wrecks → APC) and open it’s attributes.
Expand the section Emitter 3Ditor, tick the Use object as emitter box and the following should activate:

Enable/disable the emitter attributes/emitters for the entity. If this has been activated before and the entity already has emitters set up disabling this and pressing OK will delete the emitters.

Enable/disable the use of the default emitter set. The tool comes with a default set of 4 emitters; fire, smoke, sparks and a light. This set can be defined to what you like in the actual Emitter 3Ditor. Only limitation is that it can not be larger than 4 emitters. But more on this later.

The amount of emitters to insert, 1 to 5.

It is possible to have the emitter(s) appear on selected object model selection (selected from the Model selection list), this links the selection selections between emitters so that if you change one emitter’s model selection all emitters will get the same change.

Same as above but for the die out timer.

Checking this box makes the emitters “follow” the entity’s hideObject state in scenario in-game. When the entity is hidden with hideObject the emitters stop emitting, and when the object is set visible again with hideObject false they start emitting again.

All entities with emitters set via the entity attributes will be automatically added as editable objects for Zeus, including it's emitters. Checking this box will stop that from happening for the given entity.

This will limit the entity and it's object to be editable only by a specific Zeus, or Zeus'. Enter the Variable Name of the wanted Zeus/Zeus' here.
When using multiple Zeus' separate the names with a semicolon, without any spaces: Zeus1;Zeus2;Zeus3

Type of emitter to use for the given emitter, either particle source, light point or light reflector (directional).

Type of the effect for the given emitter, either Class or Preset. Class is any of the possible config classes, Preset means custom emitter presets saved with the actual tool. No preset is available by default.

The particle/light class or preset depending on Effect type selection.

A list of model selections of the selected entity.
“None” means the emitter(s) will appear on the center of the entity object, otherwise will appear on the position of that selection on the model.

Above mentioned Link model selections links these between all emitters, so when that box is checked any selection from this list on any emitter will apply the same selection to all the emitters.

A timer in seconds after which the emitter will be deleted, after it has started emitting.

Name for the emitter, can be left blank in which case a default name of particle/light_emitter_X will be used (X is a number starting from 0). The emitters can be renamed later on, rules of the regular entity names apply; can’t start with a number, or include space or any special character, except the underscore.

If you use an emitter class (or preset) that has damaging values with an entity that is really vulnerable to the damage (Man class, some weaker vehicles) you will get a notification about it after pressing OK:

Checking the Don’t show this message again box will disable the message from showing in the future.

If you wish to copy/paste an entity with the attribute emitters set YOU CAN NOT USE THE NORMAL COPY/PASTE like you would normally with Eden entities. Instead you have to use the emitter cloning functionality provided by the tool: select (one of) the emitter(s) set on the entity and press SHIFT + ALT + C on you keyboard, a clone of the entity with the emitters is created in random position close to the original.