We use PMM for our monitoring solutions. For a security compliance we have been asked about the password policy of our user creation in PMM. request you to share us the password policy or if the feature will arrive at a later version for the same.
There are no such restrictions on password creation while adding a new PMM user - Add users - Percona Monitoring and Management
PMM uses grafana service account token for auth and also supports some other popular authentication options like LDAP /OAuth, etc.
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The client or database-level users can be defined as per your database policy - Connect MySQL - Percona Monitoring and Management. On the PMM front, there are no such strict requirements.
Can you specify your exact requirements for better clarity?