Change Category page to excerpts and different layout

Hi, I'm new to Generate Press, and I'm not sure how to accomplish the following:

I would like to have the category pages show the posts, but with excerpts only, and the layout being different from the posts themselves.

So, for example: Category: Cars, [posts listed after one another] Renault <Excerpt>, Mazda <Excerpt>, without any further information like date published, author, link to category etc, even though that information might actually be visible on the post itself.

However, I'm not sure what the best way is to go about this. Should I make a category.php page in my child theme, copy the standard archive.php code into that, and then tweak it to my liking? Or is there a simpler way to go about this?

Hope I described my issue clearly enough, if not, please do let me know. Best, Rob