Would someone kindly let me know if the OXXO can be partly paid...

Would someone kindly let me know if the OXXO can be partly paid ( as is , at any time ) or do they require to be converted to partly paid first . Is it too late ??
Sorry I am a bit of a dummy . I know I can convert to ords at any time up to expiry .

Thanks ... I am new holder . Looks like a big future here .

Thanks to Good Oil ( he's not the Messiah , he's just a naughty little boy ! ) for steering me here . LOL