By connecting Mattermost to Youzer, you'll be able to manage your users' accounts transparently and easily. Youzer offers you a complete view of Mattermost authorizations, which can be found on the connector and user files.
Connect your IS (AD, for example) and your HRIS to Youzer in order to carry out an account/user reconciliation that will enable you to automate your software assignments when an employee arrives, and to suspend his accounts when he leaves.