daggerheart/templates/sheets-settings/companion-settings/details.hbs

<section
    class='tab {{tabs.details.cssClass}} {{tabs.details.id}}'
        data-tab='{{tabs.details.id}}'
    data-group='{{tabs.details.group}}'
>
    <fieldset class="one-column">
        <legend>{{localize 'DAGGERHEART.GENERAL.basics'}}</legend>
        <div class="nest-inputs">
            {{formGroup systemFields.evasion value=document._source.system.evasion localize=true}}
            {{#each resources as |resource|}}
                {{formGroup resource.field value=resource.value name=resource.name}}
            {{/each}}
        </div>
        <div class="form-group">
            <div class="form-fields">
                <label>{{localize "DAGGERHEART.ACTORS.Companion.FIELDS.partner.label"}}</label>
                <select class="partner-value" name="system.partner">
                    {{selectOptions playerCharacters selected=document.system.partner.uuid labelAttr="name" valueAttr="key" blank=""}}
                </select>
            </div>
        </div>
    </fieldset>
</section>