[Solved] 2 Monitors & 1 PC - Connecting to Graphics Card & Integrated Graphics, Dual GPU & UEFI Settings

Hello, I have a few questions about two monitors connected to one computer:
1) Is it possible for two monitors to function properly when one is connected to the graphics card and the other to the integrated graphics of the motherboard?
2) If the above is not possible, would adding a second other graphics card from the same manufacturer without connecting cards in SLI would allow me to work on two monitors (one monitor to one card and the other monitor to the other card)?
3) Will connecting two monitors to one graphics card will not reduce the performance in games when I have the game running on one monitor and open tabs in the browser on the other?
4) How does it look from the UEFI settings side and from the software (settings) side in Windows 10?

My equipment:
MOBO Asus Maximus VIII Ranger
CPU i5 6600k @ 4.6 GHz
Gigabyte GTX 1060 extreme gaming GPU
RAM Corsair Vengeance LPX @ 3200 MHz Cl 15
ROM SSD NVMe Samsung SM951 128 GB, SSD Goodram Iridium Pro 240 GB, HDD Seagate 2 TB, HDD Toshiba 500 GB
BeQuiet Pure Power L8 730w power supply
CPU cooler Raijintek TISIS
SillentiumPC Aquarius x95w chassis
Windows 10
LG FullHD monitor (I am writing from the phone and I cannot check which model exactly, anyway I use an HDMI / DVI adapter)

The second monitor that I would like to connect does not have FullHD (something below this resolution but I do not have how to check now, if the inputs do not match or it is not possible to buy the appropriate adapter, I am able to buy a new monitor with a maximum resolution of FullHD)
The second graphics card I thought about was the cheapest Nvidia GT 710 with 1 GB vRAM because the second monitor is to be used for browsing the Internet, running PC diagnostic programs, word and excel support.

Please help.

Put everything on one card. Windows + P shortcut and set whatever suits you. Your gaming performance will drop a frightening 0.5 frames . I mean, it has practically no effect.

@bialy_pielgrzym And for what purpose do you want to connect 2 separate graphics cards? ? ? Since the one you have, it automatically lowers the clock speed and power consumption, if there is no need to operate more efficiently.
My [GTX 1070] is currently using about 10-15W and between 5-15% of its power.

"why do you want to connect 2 separate graphics card?" That the first card is not loaded with the operation of the second monitor, i.e. the program / programs running on it.
Since it will not significantly affect the performance in games, I will compensate for it by slightly tweaking the graphics card. I am not afraid of performance when I have excel turned on on one monitor and a browser on the other only when a game is running on one and a browser or some other low-resource program on the other.

@bialy_pielgrzym You won't even have to overclock anything, your performance may drop in the game from 1fps, and you won't be playing and using the program at once. Also, do not be afraid of anything. Greetings

I connected two monitors to one graphics card. On the first FHD monitor I run games and on the second HD monitor I run the browser and / or undemanding programs. I did not notice any FPS drops in games.