Hm, your examples look a bit incomplete. I might be mistaken, but the first example seems to be a files section? Whereas the second example seems to be a files field. A files field doesn’t have a template option, to assign a template to a files field you would have to use the uploads option.
If I understand you correctly, what you want in your column is the headline field plus a pages section, then, not a pages field?
If you want to mix sections and fields, your fields need to be wrapped inside a section (fields section in this case) as well:
columns:
- width: 1/3
sections: # different types of sections here
fields: # a fields section
type: fields
fields:
headline:
type: text
placeholder: "{{ page.title }}"
disabled: true
cover: # this is a section now as well
type: files
label: Cover
layout: cards
image:
cover: true
info: "{{ file.dimensions }}"
template: cover
multiple: false
I assume the sidebar example above was from a blueprint with a page preset?