How to add a Create specific Sub-task button next to the parent issue transition buttons?

[Rafi Vita]

I have a specific sub-task that that I want to create a designated button for it and place it near thee Transitions buttons.

Thanks! 

[Nic Brough -Adaptavist-]

What does this button do?

[Rafi Vita]

create an issue (sub-task type).

like going to: image2016-7-11 14:38:29.png

image2016-7-11 14:39:29.png

[Nic Brough -Adaptavist-]

Ok, you'll need some code to inject an extra button there.  I'd use the script-runner's ability to create web-fragments to do that, and then I'd think about doing it all automatically too - click button, automatically create the subtask.