Adding a plugin is as easy as putting the directory into the directory {MODELER_LOCATION}/plugins.
On macOS you have to create the plugins folder in this directoy: /Users/{USER_NAME}/Library/Application Support/camunda-modeler. A compressed version is always available in the release section.
Input
Output
Variable
Listener
Task Listener
Extension
Field Injection
Element id
Documentation
Transactions
Is Executable
Is not Executable
💡 Save toggle preferences in modeler
💡 Add implementation for cmmn
💡 Show toggle state
💡 Add implementation for sequence flows