How to open the small window of vivo s7?

If it is multi-tasking, please refer to the operation method:

Go to Settings-(Quick Assist/System Management)-Multitasking-(Message Multitasking), turn on the Multitasking switch, and open the software under "Notifications displayed as floating icons";

Message reminder: Go to Settings → Status Bar and Notification to open the notification authority of the software. When watching videos, e-books or news on mobile phones, if someone contacts via WeChat QQ or SMS, an icon will pop up in the upper right corner of the page to prompt unread messages;

If it refers to the picture-in-picture in the game, you can slide up and down with three fingers in the game interface to bring up the message list, and click on the message to enter the picture-in-picture in the game, that is, the message is displayed above the game in the form of a floating window. The settings toolbar on the game interface can be minimized, maximized, closed and dragged.