Are you looking for How To Create User Group In Slack article? Here are some solution and article provide byPhares.
In some cases, it may be fine to invite someone to a new channel, but in others, it won't be. Using user groups allows you to get around that issue. In any Slack channel, you just need to @ the user group name and it notifies all the members of the user group.3 Jun 2019Recent FAQ How To Create User Group In Slack
What is the difference between group and channel in Slack?
Org Owners and Org Admins can set an org policy to manage user group permissions for every workspace in their org.
What is a user group in Slack?
Channels can be public to everyone in the company or private to invited members only. Direct messages (DMs) can be one-on-one, or you can start a group DM with up to nine people.
How do you create a user group?
In some cases, it may be fine to invite someone to a new channel, but in others, it won't be. Using user groups allows you to get around that issue. In any Slack channel, you just need to @ the user group name and it notifies all the members of the user group.3 Jun 2019