How setter might contact boss on a mobile application (4,6)
I believe the answer is:
text editor
'how setter' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'contact boss on a mobile application' is the wordplay.
'contact' becomes 'text' (I've seen this before).
'boss on a mobile application' becomes 'editor' (I can't explain this - if you can you should give a lot more credence to this answer).
'text'+'editor'='TEXT-EDITOR'
'might' is the link.
Can you help me to learn more?
(Other definitions for text editor that I've seen before include "Application author may need" , "Creator of files" .)