Activate the Developer Mode (In case it's not already enabled): Go to "User Settings", and then to "Advanced" in the APP SETTINGS section. Enable the Developer Mode.
User Settings
Advanced -> Developer Mode
Get the ID of the channel in which you want the menu to be. To get the ID, right-click on the channel section and click on "Copy ID"
How to copy the Channel ID
In the config.yml, go to discord-bot -> main-menu -> channel and paste the ID you just copied. Enable the section with: "enabled: true" and configure the rest of the section to your liking. In the next restart you should start seeing the menu.