Set an explicit bar for chat and support hires, because the role looks easy to fill and really is not. Doing it well takes reliability, discretion, genuine comfort with adult content, and solid communication, all at once. Hire whoever happens to be available and you get exactly the problems support is supposed to prevent.
from the studio side, if you are hiring for EU-hours coverage the reliability has to hold at those specific hours, not in general. plenty of people are reliable in theory and then cannot actually work the window you need covered. so part of the bar is confirming they genuinely can and will show up for those hours.
as a content seller who has hired support, the thing that mattered most was the adult-comfort and discretion filter first, because an operator uneasy with the content or careless with private information creates problems no skill offsets, so that fit comes before general ability. so screen for adult-comfort and discretion first, before general ability. so make comfort with the adult context and reliable discretion the first filter before general ability, because an operator uncomfortable with the material or loose with private information is a risk that outweighs their other qualities, so the sellers and operators who staff these roles well gate hard on that fit before assessing general support skills, which means the adult-comfort-and-discretion is a genuine first gate, since the role involves the content and customers directly and a poor fit there causes discomfort, mistakes, and privacy problems competence elsewhere cannot compensate for, and screening for the adult-context fit before the general ability is what the operators who staff support well do, making the discretion and comfort the threshold, because no amount of general support skill compensates for an operator uneasy with the content or careless with the private information the role handles, and screening for genuine adult-comfort and discretion first, before assessing the general support ability, is what the experience of hiring support for adult content teaches as the priority filter.