Differences Between Buses and Categories

Item	Bus	Category
Mixing	Signal level	Parameter level
Effect	effect plugin	Parameter level
Apply AISAC	No	Yes
Limiting	effect plugins, signal level	Limited based on the number of Cue playbacks
REACT	No	Yes
Volume adjustment	Per bus	Per category
Snapshot	Yes	No

How to Change the Volume

Waveforms are mixed at the signal level on a bus.
The volume parameter is adjusted in a Category.

Ducking and Limiting

You do not know how many sounds are played on a bus. However, you can analyze the volume and apply a compressor.

With a Category, you know how many Cues are played, so you can limit their number.
You also know how many Cues are played and in which Category, so you can also use a REACT processing.

Effects

When you auto-modulate parameters in an AISAC, you can treat them as effects in the Category or Cue.
You must send them to the bus before you can perform effect plugins.