I have just finished development of acknowledgement function.
“Ack” button is displayed on the top right corner on events and host events screen.
Acknowledge screen is showed when click the button. It is possible to confirm events and input acknowledge message on this screen.
If you want to acknowledge multiple event, click event history list on events or host events window.
The acknowledge function works only from Zabbix 1.8.4 because there is a bug on acknowledgment function of api on Zabbix 1.8.2 and 1.8.3.
This function will be added to Mozaby 1.1.