Linking templates to hosts
To link a template to a host, you can either select the hosts you want to link from the template's configuration form, as we've seen in the Creating templates section, or you can choose the template you need for a host in that host's configuration form by going into the Template tab.
Once linked, a host will inherit all of the template's entities. Previously existing entities with the same name will be overwritten, but entities not included in the template will remain as they are and not touched in any way by the linking operation.
All entities will maintain their original template's name when displayed in the configuration section of the Web interface, even when viewed from a host configuration page. However, this doesn't ...