Seen a few people being asking about this so thought I'd share the way I made it, this may not be the best way but it doesn't require any sort of macro capable hardware and works for me.
Leap can be annoying to click while using other abilities, especially with bosses with small hit boxes. I use Autohotkey (easily found on Google) to make a script which clicks leap for you, so that you only have to press the leap ability and mouseover where you want to jump too. The script to do this is:
Send, Y ;
X is the button you want to press to use heroic leap ingame and Y is your heroic leap binding, these have to be 2 seperate keys otherwise it doesn't work. I bound heroic leap to a really obscure binding ingame (alt-=) and and made that Y, while my proper leap binding is what X is. You then just run the script!
Note: Ctrl/Shift/Alt = ^/+/! in AHK script if your using modifiers (e.g. shift-d is +d).
Hope this helps, PM me if you want any help setting it up.
Edit: WARNING: This is against ToS so use it at your own risk.