Subject to our Design Policy, this is a change that our themes team may be able to make on your behalf. I'll have to verify your account in order to look into that for you, so let me know if you'd like to do that and I can get the process started!
Okay, sounds good. I've just sent you an email, so if you'd like to reply there then we can get started. Thanks!
Provided that you're on a paid plan with us, our theme support should be able to do this for you. Just to confirm, you're referring to a grid collage as opposed to a columned layout? Thanks!
Are you also using the Brooklyn theme? As well, are you currently on a paid plan?