After every support interaction Quarterly Monthly After every milestone The correct answer is: After every support interaction.
If your tickets go through different stages If you provide multiple products or services If you have multiple customer service agents If your tickets have different priorities The correct answer is: If your tickets go through different stages.
Any time you get negative feedback on an article Monthly Whenever products or service change pertaining to the article Quarterly The correct answer is: Whenever products or service change pertaining to the article.