I'd Like to make custom submenu (accessible through the command center).

In it, i'd love to see some basic upgrades (with it's costs) for more wood, iron, ... or any other resource (including colonists, food, energy, warehouse space)

However, the main official guide/ level editor page is kind of ... useless

It just says what you 'could' do without saying as HOW to do those things, no examples, no nothing.

I could go on ranting on how inefficient this editor actually is but i guess i can do that later

Can someone, please, for the love of god, tell me or show me how to make a simple submenu in the command center? Spend way too much hours on this already so i gave it up

Thanks in advance!