Update User Group Members

import { WebClient } from "@slack/web-api"

/**

 * Update User Group Members

 * Replace the full member list of a user group (e.g. @oncall) with the given user IDs — users not listed are removed. Workspace settings decide who may edit user groups; a bot token often gets permission_denied, so use a user token from someone allowed to. Requires usergroups:write on the connection.

 */

export async function main(auth: RT.Slack, usergroup: string, users: string[]) {

  const client = new WebClient(auth.token)

  return await client.usergroups.users.update({

    usergroup,

    users: users.join(","),

  })

}