@RichieNarvaez Let's take notifications for instance. For me, the upper right hand corner holds a drop down with unpin on the bottom of that. I select and the notifications column is gone.
I select notifications from that column on the far right and the drop down that appears with the notifications column has pin/unpin as options.
Search brings up a column, you can pin those searches too. I have one for #writing :)
This (pic below) is also a feature worth checking out: (The toggle switch here in the column settings).
With it you can add multiple tags to a single column.
Very useful as some will use #writing , some #cosowriting , some #writingcommunity etc, and you probably want to see their posts too.
Importantly you can also filter out posts that contain hashtags you don't like along with one or more you do, using the "none of these" setting.
@RichieNarvaez I just realized that next to pin/unpin are arrows to order my columns :D