Severus inclined his head when Harry said he wanted to mingle. He had no intention of doing so. There were few people here that he would voluntarily speak to and if anyone had a need to speak to him, they could make the approach.
"When it is the appropriate time." He arched an eyebrow and looked rather tolerantly amused. "When the audience is ready and will be appropriately surprised and agreeable to his idea." The wizarding world could do worse than have Draco at its helm. Draco had his flaws but he was at least capable of seeing the bigger picture and doing what was needed.