Enable the 'PublishLastActive' Parameter so that LastActive Property can be disabled.
This was available in Skype for Business:
- Last Active presence information may be incorrectly interpreted as reflecting the actual user's status at work. Therefore, users may rely on it to remotely monitor an employee's activity. However, this behavior is not enabled in some countries.
- Last Active presence information that's provided to users should not disclose how long a user is away or offline for business reasons.