Hi Elios, after you click the select lenses button on this frame, please choose prescription as the glasses type then you will be asked to input or upload your prescription. Please don't forget to fill in your ADD number as it is needed for a bifocal/progressive lens. After the prescription page, choose multifocal to see the options for bifocal or progressive. Check here for step-by-step guidance: https://www.firmoo.com/help-p-42.shtml
. Please feel free to live chat, email or call our hotline for assistance. Thank you.