Hi there, ratie1995.
The payroll feature in QuickBooks Online (QBO) International version is unavailable. We only offer payroll service to United Kingdom, Australia, United States, and Canada regions.
As a workaround, you can record the intern salary through a journal entry.
You might want to look for a payroll app provider in the website that integrates with QBO South Africa region.
I have a link here that contains articles in managing your business in QBO: https://community.intuit.com/quickbooks-accountant-za-en. Then, choose a specific topic in the Browse Topics section.
I'm just a reply away if you need anything else with recording transactions. I'm always here to help.