You can use the Advanced MCE Remote Mapper Tool to change the functions of the remote control buttons.
I, for example, have the green button mapped to CTRL+ESCAPE, so the start menu opens when pressing the button.
Then I have Emby (and Kodi) fixed in the Windows 10 start menu, so I can move to them with the remote and start it from there.
Don't forget to backup the settings, as you have to restore them after each bigger Windows update.
Here is also some info how to use this tool.
It should also be able to add some hotkeys with third party tools, to directly start Emby or other programs, but I never needed this.
Edited by serpi, 21 January 2020 - 05:06 PM.