What is the thing called where you can see the chat and how can you get rid of it?

I am currently trying to build and script all by myself with help from my friends! They don't really know anything about scripting at all so, I have some here for help! I want to get rid of the thing where you can see other's chat. (Also you can check out my group it's called Hunny~. https://gyazo.com/386dbe6c1f955749d2b87b659824bb9c

To remove the chat go into explorer and click Chat then in the properties tab uncheck LoadDefaultChat.