Dynamic enabled items ?

[Orwel]

I want to collect some hardware items (power consumption, fan status, ...) but only at bare metal hosts. Therefore i created an item "isvirtual" which checks if this system is running in a vm or bare metal, however i dont find a way to dynamicaly enable/disable items based on the value of anaother item. I tried something with discovery rules but found no way to create discoevery rules from item prototypes.
Is there a way to configure this use case in zabbix?

[Semiadmin]

https://www.zabbix.com/documentation/guidelines/en/thosts/configuration/discovery_rules#singleton-discovery

[Orwel]

I dont think singleton discovery solves my usecase so i try to clarify.
My optimal solution would be:

if baremetal(discovery) => get bmc-data(as item prototype)
--> from bmc data discover powersupplies (dependent discovery from bmc-data as mater item)
----> get power consumption
----> ...
--> from bmc data discover fans
----> get rpm
----> ...

In this scenario i need to create discovery rules (for fan, powersupplies,...) from an item prototype as master item, but i dont see how singleton discovery can help me here.
If i create bmc-data as a normal(non discovered) item all works as exspected but on non bare metal hosts i get lots of errors (in log) and invalid items so i need a way to disable the bmd-data masteritem on non bare metal hosts.

[cyber]

Sounds like "overrides" ... if "{#ISVIRTUAL}" exists, then stop processing or do not discover...