Embedding existing macros is a feature that is designed only for the Full version of ZenUML App on Confluence. It is available on the Lite version only for feature preview.

Which version should I choose? Please see https://zenuml.atlassian.net/wiki/spaces/Doc/overview#1.-Which-version-of-the-ZenUML-Confluence-App-should-I-use%3F-(Full-vs-Lite))

How does it work?

Use /embed to insert the embedding macro.

Open

It will open a diagram on which you can choose an existing macro and insert it onto the page.

Open