I am new to Nexus, but not WordPress or web design. I was editing a(what I thought was a single) page and deleted a couple of the items. I now realize that I altered the “webpage category”. I know what’s missing (A contact widget, a newsletter signup, etc.), but unsure how to add the items back in. I’ve been using the Nexus theme front-end. But am somewhat familiar with the WP backend too. How can I get these widgets(?) back on all the pages? Thank you so much.