You won't be able to get it the way you want it in all circumstances. I tried making my Preferred Name Herb, which it is. Except when WT wants to use my 'Long Name - Private,' when it shows as 'Herb L Tardy.' It's not as rare as the Help page indicates. I saw it within a day or two of making the change. Sorry, WT, that's just stupid. Middle initials go with full names, not with nicknames or diminutives. I'd rather be 'Herbert,' even when not necessary, than ever to be 'Herb L.' So my official Preferred Name is Herbert, but nobody calls me that except on the WikiTree. And my estranged wife when she's angry, which is all the time.