Quick Assist gives you full control, so you can quickly work your magic on their device. This is a Windows 10 application that enables two people to share a device over a remote connection. By allowing a trusted person to access your computer, you can troubleshoot, diagnose issues, and receive instruction on your computer. Anyone with a Windows 10 device can use Quick Assist. Remember: Only give control of your computer to people you trust. If you are the person giving assistance, you need to use a Microsoft account. As long as you are comfortable with allowing that person access to your Windows 10, the following steps will get everything working.
How to set up Windows 10 Quick Assist
First of all type the Quick Assist in the Start menu screech bar and press Enter button.
Select Get assistance and enter the 6-digit code from your helper into the text box titled Code from the assistant. In my case the code is 123456, then press the Share screen.
Remove all private data you do not want your helper to see, then click Allow.
Now you can see the yellow border around the edges of your desktop, along with a Quick Assist icon at the top of your screen.