Custom Template Project Icons

I’m trying to make a Custom Template Project but I’m struggling to find how to change some custom settings:

1 - There are two thumbnail icons (Template Icon 64x64 and Template Preview 400x200, that appears on the right, above description). How can I set these images?

2 - How can I set a default project Icon to be shown in my library without having to open the project and manually changing inside the Editor? (Template is created; custom default icon is automatically set. Like when creating a brand new Vault’s project that has a custom default icon: “Blueprints” project, for example)

I’ve already tried to create a custom SharedContentPacks folder under “TemplateResources” folder (EpicGames/EngineVersion/Templates), updating it inside the “TemplateDefs.ini” file for my project but it does not seem to be taking effect.

Also moved the pics to the “Media” folder, inside the project (as I saw inside the TP_FirstPerson Template) but no effect.

I’m trying to understand how the Launcher get these info, but it doesn’t seem too intuitive, at least for me…