Another category of elements allows you to superimpose the occurrence and effects of discrete events onto continuously varying systems:
| Element | Default Symbol | Browser Icon | Function |
| Timed Event |
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Generates discrete event signals based on a specified rate of occurrence, regularly or according to a specified distribution (i.e., randomly). |
| Triggered Event |
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Generates discrete event signals based on one or more specified conditions. |
| Decision |
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Generates one of up to three defined discrete event signals based on specified conditions. |
| Random Choice |
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Generates a user defined discrete event signal based on specified probabilities. |
| Milestone |
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Records the time at which a particular event or specified condition(s) occurs. |
| Status |
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Generates a condition (True/False) in response to particular events or specified conditions. |
| Discrete Change |
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Generates a discrete change signal (a value) that can subsequently discretely modify the values of other elements (e.g., Integrators and Reservoirs). |
| Interrupt |
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Interrupts a simulation when a specified event or condition occurs and displays a user-defined message and/or writes a message to the run log. |