@Niro there is already a user-group whitelist via the "Bypass multiple account checking" permission (there are additional permissions).
Multiple account handling permissions
- Bypass multiple account checking
- Can enable / disable alerting for user
- Can enable / disable alerting for log
- View reportings
Per-user whitelist;
I've updated the product description to include that information. Over the next week I'll be adding more information to the description.