The provisioning templates page can be accessed via The Hosts Menu:
Hosts > Provisioning templates
In particular provisioning templates are used to generate any and all scripts required for host provisioning.
Provisioning templates are subdivided into several types. The full list of types goes as follows: PXELinux template, PXGrub template, PXEGrub2 template, iPXE template, Provisioning template, Finish template, Script template, User data template, ZTP PXE template, and POAP PXE template.
In general, a clean install of orcharhino will come with any required templates, and it is not expected (nor recommended) that orcharhino users manually edit any templates. Locked templates should not be changed, otherwise they will not be updated any more. Use the clone function instead. Note, however, that cloned or self-created templates are not updated during an orcharhino update.
In case you know what you are doing, and template editing is desirable, the web interface provides extensive tools to do so, including inbuilt documentation on template syntax. (See also: Viewing and/or Editing a Template).