<?php

putenv('CLOUDINARY_URL=cloudinary://<API Key>:<API Secret>@<Cloud name>');

<?php

use MadeHQ\Cloudinary\Model\FileLink;
use MadeHQ\Cloudinary\Model\ImageLink;

private static $has_one = [
    '<FileVariableName>' => FileLink::class,
    '<ImageVariableName>' => ImageLink::class,
];

<?php

use MadeHQ\Cloudinary\Forms\UploadImageField;
use MadeHQ\Cloudinary\Forms\UploadFileField;

public function getCMSFields()
{
    $fields = parent::getCMSFields();
    $fields->addFieldsToTab(
        'Root.Media',
        [
            UploadFileField::create('FileVariableName'),
            UploadImageField::create('ImageVariableName'),
        ]
    );
    return $fields;
}