Zoho Books - Bills; No way to download as pdf?

Hi,

I was wondering whether there is no way at all for me to be able to download a specific Bill as pdf. Otherwise, is there an option to convert a bill into invoice so that I can dowload it as pdf? (I know I can convert an invoice to a bill, but cannot seem to do otherwise)

Thanks in advance and keep up the great work guys!

Best,
Ledia