Is there an automation of tables in Atlassian Confluence?

I would like to automize a table/list. If a checkbox is ticked, the next column should get populated with the username and today’s date. Is this possible?

No, Confluence does not support such a feature out of the box. Unfortunately I do not know of any add-on that would do that either. A custom plugin could do it, but that may be too expensive for your use case.

Atlassian has a project planning category in their marketplace. That may help.

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