This is a layout file for a DZ60 keyboard using a split-spacebar and a 1.75u shift key. It's based on the default DZ60 layout with additions for essential/useful keys like arrow clusters, home/end, print screen, and volume up/down keys.
It uses two function layers: the first for less-common system keys and backlight/underglow settings, activated with the default function 1 key, and the second layer for common navigation keys like arrows and paging. This second layer is activated with the middle space key (for easy thumb usage), the CapsLock key, or the Function key next to the right Alt key.
I also replaced all the macro keys in the default second layer with the F1-12 keys, to make them easier to access.
NOTE: Since CapsLock has been converted to a Function key, if you want to use Caps Lock you will need to use Function + CapsLock.
To see how each layer is set up, take a look at the images below.
To use this layout, just save dz60.json (below, probably best viewed with the Raw view) to your computer, then head on over to http://qmkeyboard.cn/ and upload a copy of the json file (in the "Upload QMK Firmware Builder configuration" section). Customise it all you like, then download the .hex file via the Compile submenu.