How Do I Get A 'Key'?

Recently (Or, rather, for the last year) I have started color-coding my Dream Journal. Blue for side-notes, Purple for tame dreams, Orange for anxiety dreams, Red for nightmares, and plain text for stats.

I've seen other users utilize a 'Key' for their Dream Journals, I just wanna know how I can get one. Any help would be appreciated.

On the Dream Journals page, under the logo you should see a button for "DJ Settings". Click that, and then on the left sidebar click "Organize Sidebar". On the top right you should see "Add Custom Block". Title it whatever you want (mine is called "Color Code", and then add your text and colors there. Click "Save Changes", and then you should be able to move your new block up or down in the order as you like.

Thanks for the reply. I have it all set up now, so now it should all be good.