Voluntary and Short Term Work? (Gaborone)

Hello,

I am hoping to spend a year or so in Botswana from Protected content would like to experience a combination of travelling, volunteering and perhaps working if I am able to find work too. I am struggling to find information on voluntary opportunities and work as well. Please could someone point me in the right direction? In particular if anyone knows more about the way that healthcare/dietetics work that would be fantastic.

Thank you in advance
Heather