[Feature request] Several WebUI improvements

[wax]

Support:

1. "overlaying" of several graphs on single screen slot
2. more than 2 Y-axis' per single graph with separate maximums
3. combining (??) stacked graph with simple one

PS: sorry for my terrible english

[zabbix_zen]

Though I have no idea how practical those would be,
I suggest you open a Jira account here and separately open Requests on each one of them there.

Later they'll be either approved or rejected by Zabbix devs.

[wax]

Oh, Thank you very much!
I post my request as https://support.zabbix.com/browse/ZBXNEXT-962 and it's sub-tasks