The KAZA Univisa program has been resumed and now includes Botswana in addition to Zambia and Zimbabwe. Nevertheless there are few information about this multi-country visa. In the linked note states that you can get it at "acquire it at an entry Point of Sale (POS) at Lusaka, Livingstone and Ndola airports", but is it possible to get it on a land border? Or may I get it online or at the embassy?