# Appendix

Learn more about the following topics:

* [Enable or disable US tax certificates  ](https://docs.digitalriver.com/salesforce-lightning/appendix/enable-or-disable-us-tax-certificates)
* [Contact point address](https://docs.digitalriver.com/salesforce-lightning/appendix/configure-the-contact-point-address)
* [Multi-currency support  ](https://docs.digitalriver.com/salesforce-lightning/appendix/set-up-multi-currency-support)