etc/crontab.xml

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Cron:etc/crontab.xsd">

<group id="default">

    <job name="facebook_business_extension_aam_settings_cronjob" instance="Facebook\BusinessExtension\Cron\AAMSettingsCron" method="execute">

        <!--Check this document to read more about cron jobs in Magento: https://devdocs.magento.com/guides/v2.4/config-guide/cron/custom-cron-ref.html-->
        <schedule>*/20 * * * *</schedule>

    </job>
    <job name="facebook_business_extension_category_sync_cronjob" instance="Facebook\BusinessExtension\Cron\CategorySyncCron" method="execute">
        <!-- daily at 0:0-->
        <schedule>0 0 * * *</schedule>

    </job>
</group>

</config>