Could you please be more specific about the goals you would like to achieve?
If you are looking for a way the use the presence of the account and to set it via command line or API, be aware that the API of Zoiper 3 Biz supports the following:
EPresenceModel IZoiperAccount::PresenceModel - Specifies the presence model used by the account.
VARIANT_BOOL IZoiperAccount::PublishPresence - Enables the SIP account to publish its presence information.
However currently there is no way to specify the actual presence status.