How to configure shortcuts for Transcriber 0.1.2 extension in LO Writer.

Hi,

I am a newbie in this forum currently runnnig LibreOffice Version: 4.2.7.2 Build ID: 420m0(Build:2) on an Ubuntu 14.04 laptop. I currently am using VLC player and SM player for the purpose by setting universal shortcut keys. I recently added the transcriber 0.1.2 extension for LO Writer in order to try out the transcription feature on LibreOffice. But, I’m not able to use the shortcut keys mentioned in the (Ctrl J), (Ctrl up), (Ctrl down) etc. on my system. Could someone please help me configure the shortcut for the extension. It will be an enormous help if I could get this working.

Thanks a Milion,
Abish A. B.