Via Composer (Recommended)
composer require ewebecommerce/module-registration-field-suite bin/magento setup:upgrade bin/magento setup:di:compile bin/magento setup:static-content:deploy -f bin/magento cache:flush composer require ewebecommerce/module-registration-field-suite bin/magento setup:upgrade bin/magento setup:di:compile bin/magento setup:static-content:deploy -f bin/magento cache:flush