How to close an issue in Zabbix?

Question

Monitoring

If an event of the "Unavailable by ICMP ping" type is generated in Zabbix due to the absence of a ping from the device device, then what should I do if the device is disconnected for a long time?
The fact is that in the "Unavailable by ICMP ping" event, the "Close problem" checkbox is not active for some reason, and for some reason I did not find a way to make it active.

Answer 1

In order for the checkbox to become active, you must enable it in the template in which your trigger is defined.
And in order to avoid problems for a long-term disconnected device, there is a Maintenance setting in Zabbix (Maintenance, it seems). There you can specify the shutdown period and the host(s) for which the timeout is configured.

Answer 2

The checkbox in the template settings "Allow closing manually" is unavailable for some reason