Dear ZabbixOrz 
I use the View on "Overview" under "Monitoring" a lot. But I have a little issue and can't clear this one.
A server had a problem a few weeks ago, so I looked it up and cleared the problem on the server. After this I "acknowledged" the problem in zabbix. Then there is a checkmark in the overview, I guess this stands for problem solved or done. Since this one problem, which had the severity "High", there was never a problem or an issue on this server.
My problem: I can not clear the checkmarks. They are still there and the field is still marked as severity "High"(red color).

How can I clear this field? If a problem is solved and acknowledged, I would guess the checkmark should disapear after a while and the field should be "OK" (green) again.

Maybe I just did oversee something in the manual.
Hope somebody understands me

I use the View on "Overview" under "Monitoring" a lot. But I have a little issue and can't clear this one.
A server had a problem a few weeks ago, so I looked it up and cleared the problem on the server. After this I "acknowledged" the problem in zabbix. Then there is a checkmark in the overview, I guess this stands for problem solved or done. Since this one problem, which had the severity "High", there was never a problem or an issue on this server.
My problem: I can not clear the checkmarks. They are still there and the field is still marked as severity "High"(red color).

How can I clear this field? If a problem is solved and acknowledged, I would guess the checkmark should disapear after a while and the field should be "OK" (green) again.

Maybe I just did oversee something in the manual.
Hope somebody understands me