Tabs on IPhone 13 ProMax

I was in the the Safari mobile app and was checking the out the tab area. I don’t know what I pushed, but a screen popped up and a choice of tab closure schedules popped up. I haven’t been able to recreate that. I know you can access the tab closure schedule through “settings”, but this popped up while I was in the Safari mobile app. Can someone please tell me how to recreate that?? Thank you.