2020-10-26 20:08:00 +01:00
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# Restrict wildcard mentions
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{!admin-only.md!}
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2023-11-23 22:49:58 +01:00
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Organization administrators can configure who is allowed to use [wildcard
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mentions](/help/dm-mention-alert-notifications#wildcard-mentions) that affect a
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large number of users. In particular, an organization can restrict who is
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allowed to use `@all` (and, equivalently, `@everyone` and `@stream`) in streams
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with more than 15 subscribers, and `@topic` in topics with more than 15
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participants.
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2020-10-26 20:08:00 +01:00
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{start_tabs}
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{settings_tab|organization-permissions}
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2023-11-23 22:49:58 +01:00
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1. Under **Stream permissions**, configure **Who can notify a large number of
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users with a wildcard mention**.
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2020-10-26 20:08:00 +01:00
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{!save-changes.md!}
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{end_tabs}
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2023-11-23 22:49:58 +01:00
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## Related articles
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* [DMs, mentions, and alerts](/help/dm-mention-alert-notifications)
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