Per discussion in DMLT: The proposal is to make Slack channels primarily oriented towards support of staff obvious through the naming convention, specifically by appending -support to their name.

Channels treated as support channels by SQuaRE have already been renamed in this way (dm-rsp-support, com-square-support, dm-squash-support, dm-docs support) and include the following pinned item:

This is a staff support channel: it is prioritised for attention (inc. out-of-hours, Focus Friday) on a best effort basis. Support channel protocol applies: https://developer.lsst.io/communications/slack-culture.html#support-channels