1st time author referencing with commas

Hi, How do I get commas when I reference 1st time authors using Harvard

or indirect effect on one another, as it can disrupt the adherence to dietary management and the medication regimen, which alternatively affects metabolic processes*(BarringtonBeresfordMcGregor and White, 2014).*

how do I get commas in between the authors

sounds like spaces and commas were deleted from your output style’s author listing in the citations setting.