I've gone through ePO policies for 8.7 & 8.8 and can't find any options to enable or disable it.
Which version of VSE do you have installed? 8.7 or 8.8?
oh sorry it´s VSE 8.8 patch 1
You would need to set the User Interface Policies in your VSE to "Show the system tray icon with all menu options" instead of minimal menu options