the availability report in Zabbix seems hardcoded. This is generated for a year with datapoints per week.

I need this report for a month with datapoints per day. What is the correct way to generate such report? Or, is it a feature that is missing from Zabbix?

If the feature is missing I think we should start from chart4.php and build a new chart from it / add selection params (year  / month) in the ui.

Is this the right approach?