Bottom of page https://www.zabbix.com/documentation/2.4/manual/appendix/macros/supported_by_location
we mention prototypes for items, triggers, graphs.
It looks like a lack of mentioning prototypes for hosts - i.e. it's an inconsistency.

They are on https://www.zabbix.com/documentation/2.4/manual/vm_monitoring/discovery_fields

So I suggest to add on 1st page a short info block (in similar fashion) for host prototypes with an inter-link to the 2nd page.
In the info block we would need also mention Groups prototypes, not sure how would be better to format that.