Trying to customize columns with my Inbox View

Really enjoying the eM client, however, if I can customize my inbox view it will be close to perfect. I right-clicked on next to Sort by Received and selected column configurations. I see several of the columns I want to display in my inbox view: received, size, etc. Once selected they are not updated in my view, nor can I resize any columns to bring them into my view. It just looks like the “from” and subject line are taking up all of the space. Any help would be appreciated.