Use case: I manage 12 Analysis Working Groups (AWGs) for NASA’s Open Science Data Repository, with ~1,700 members across 60+ countries. Each AWG has its own Discourse group (e.g. @AIMLawg, @AnimalAWG, @HUMANawg, etc. til 12 of them, and growing). When I or my team need to send an announcement to the full community, we have to manually @mention all 12 groups in every post: which is error-prone, tedious, and easy to forget one. I want a single @AWGall group that automatically reflects membership from all 12 sub-groups, so one @mention reaches everyone. What I tried: Created an @AWGall group manually and wrote an API script to bulk-add members from all sub-groups — this works as a one-time snapshot but does not stay in sync. Every time a new member joins any of the 12 AWGs (which happens constantly), @AWGall goes stale. Searched for a native nested groups / group-of-groups feature — it doesn’t exist. The closest prior discussion is Hierarchical group membership (groups inside groups) from 2021, which confirmed no plans to implement this at the time. What I’m asking for: Either of these would solve the problem: Option A — Nested groups: Allow a group to include other groups as members, so membership resolves transitively. When someone joins @AIMLawg, they automatically appear in @AWGall. Option B — Auto-sync trigger: When a user is added to or removed from a group, fire a configurable membership sync that adds/removes them from a designated parent group. Why this matters beyond my case: Any community with sub-communities (departments, cohorts, teams, age brackets, regions) hits this wall. The current workaround — manually maintaining a separate flat group — breaks immediately as membership evolves. This is a general Discourse limitation, not a niche edge case. Happy to discuss implementation tradeoffs. Is there a plugin that already handles this, or is there appetite to build it natively?

You could create an automatic group with members of all the other groups using the Discourse Dynamic Groups plugin

Nice! Will try that out. Much thanks

嵌套群组或自动同步成员身份：使用单个 @提及来提及所有子组成员

Moin 2026 年3 月 3 日 23:05 2

您可以使用 Discourse Dynamic Groups 插件创建一个包含所有其他组成员的自动群组。

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Hierarchical group membership (groups inside groups) Product Support	21	1861	2024 年11 月 24 日
Add user to a group through membership in another group Feature automation	0	243	2024 年1 月 9 日
Parent groups and sub-groups Feature groups	20	2287	2025 年6 月 16 日
Add script to add user to user group Feature automation	4	1032	2025 年5 月 9 日
Ability to mention a Group Feature	7	3609	2015 年5 月 13 日