Need help with this?
Purchase All in One SEO Pack Pro to get dedicated support from us.
All in One SEO Pack integrates with the Advanced Custom Fields plugin so that you can use custom fields in your SEO titles and descriptions.
To integrate these, all you have to do is enter the following string into the Title Format fields under All in One SEO > General Settings > Title Settings:
Make sure you replace fieldname with the name of your custom field.