How do I access UEFI Firmware Settings on Windows 10?

[Señor]

I need to change a setting and when I reboot with advanced options, it isn't in the list. I have my system information in the spoiler below. Any help is greatly appreciated!

Spoiler

System Information report written at: 01/16/16 22:16:52
System Name: DESKTOP-CGT2JBH
[System Summary]

Item Value
OS Name Microsoft Windows 10 Pro
Version 10.0.10586 Build 10586
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DESKTOP-CGT2JBH
System Manufacturer Apple Inc.
System Model iMac15,1
System Type x64-based PC
System SKU Unsupported
Processor Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 4001 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date Apple Inc. IM151.88Z.0207.B04.1508251416, 8/25/2015
SMBIOS Version 2.4
BIOS Mode UEFI
BaseBoard Manufacturer Apple Inc.
BaseBoard Model Not Available
BaseBoard Name Base Board
Platform Role Desktop
Secure Boot State Unsupported
PCR7 Configuration Binding Not Possible
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume4
Locale United States
Hardware Abstraction Layer Version = "10.0.10586.0"
User Name DESKTOP-CGT2JBH\[REDACTED]
Time Zone Eastern Standard Time
Installed Physical Memory (RAM) 32.0 GB
Total Physical Memory 31.9 GB
Available Physical Memory 29.8 GB
Total Virtual Memory 36.9 GB
Available Virtual Memory 34.5 GB
Page File Space 5.00 GB
Page File C:\pagefile.sys
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes

 

[Shirasaki]

I can only access a few options including changing timeout and changing default startup item.

There are a few third party EFI systems including rEFI, which is the only one I know. However I haven't used them yet on my Mac.

 

[Señor]

I can only access a few options including changing timeout and changing default startup item.

There are a few third party EFI systems including rEFI, which is the only one I know. However I haven't used them yet on my Mac.

The reason I ask is because is the setting to change function keys for Boot Camp is mysteriously absent.