Merge branch 'docs-spt-ff-note' into 'master'

Docs: Add repost for Support note

See merge request gitlab-org/gitlab!28976

.gitlab/issue_templates/Feature Flag Roll Out.md

@@ -37,7 +37,7 @@ If applicable, any groups/projects that are happy to have this feature turned on
 - [ ] Coordinate a time to enable the flag with `#production` and `#g_delivery` on slack.
 - [ ] Announce on the issue an estimated time this will be enabled on GitLab.com
 - [ ] Enable on GitLab.com by running chatops command in `#production`
-- [ ] Cross post chatops slack command to `#support_gitlab-com` and in your team channel
+- [ ] Cross post chatops slack command to `#support_gitlab-com` ([more guidance when this is necessary in the dev docs](https://docs.gitlab.com/ee/development/feature_flags/controls.html#where-to-run-commands)) and in your team channel
 - [ ] Announce on the issue that the flag has been enabled
 - [ ] Remove feature flag and add changelog entry
 - [ ] After the flag removal is deployed, [clean up the feature flag](https://docs.gitlab.com/ee/development/feature_flags/controls.html#cleaning-up) by running chatops command in `#production` channel

doc/development/feature_flags/controls.md

@@ -29,6 +29,11 @@ Monitor stage, Health group.
 
 For all production environment Chatops commands, use the `#production` channel.
 
+As per the template, where a feature would have a (potentially) significant user
+impact and the feature is being enabled instance wide prior to release, please copy
+the Slack message and repost in the `#support_gitlab-com` channel for added visibility
+and awareness, preferably with a link to the issue, MR, or docs.
+
 Regardless of the channel in which the Chatops command is ran, any feature flag change that affects GitLab.com will automatically be logged in an issue.
 
 The issue is created in the [gl-infra/feature-flag-log](https://gitlab.com/gitlab-com/gl-infra/feature-flag-log/issues?scope=all&utf8=%E2%9C%93&state=closed) project, and it will at minimum log the Slack handle of person enabling a feature flag, the time, and the name of the flag being changed.