Disclaimer: I'm new. :-)
I started a new page, no parent, default template. I named it "Test Front Page". In the Layout box, I chose "Test Template".
In the Choices Template Builder, I created a new template. I named it "Test Template". For the layout, I chose "right sidebar" and added a slideshow.
In Appearance->Widgets, under the area "Sidebar Pages", I put in the "Choices Latest Portfolio" widget and edited it to my liking.
At this point, everything looks good on my frontpage. I have a moving slideshow and my sidebar has a list of portfolio items.
After this, in the Template Builder, I add a Portfolio element. After updating, my previous portfolio-item-list sidebar is replaced with what I guess to be the default sidebar content, with "Pages", "Categories", and "Archives".
If I remove the Portfolio element, it will revert to the intended portfolio item list. If I move the widget to a different sidebar, e.g., "Displayed Everywhere" or "Sidebar Blog", it will also display my intended portfolio list. However, I don't want it displayed on "everywhere" or on the blog, I only want it on the front page.
How do I control this sidebar? How do I remove the Pages, Categories, and Archives list from my sidebar?
Thanks for any help!