You can apply for a Botswana licence after you have logged 500hrs on A2 registered a/c
The licence validation is done only at Gaborone CAAB offices, and no matter who is in charge, is a quite straightforward operation, the time involved mostly depends from which Country your licence is, so no needs of interpretation here
The operator you will work for has to do the paperwork, so it is impossible "do it in Maun then see us"...