Last time I checked, GT visa application does not have any requirement to provide additional information. However, please go through the guidance and make sure this is the case even now.
I’m working on my stage 2 application at the moment. FYI: Other folks have answered this question elsewhere on the forum, so you might search through to read what everyone already shared about this.
I simply used this space to reiterate my plans for coming to the UK, as it’s a required field (even though it’s not, as I understand it, relevant to the Global Talent Visa).