How do you get the edit sidebar link to pop up in a Google sites document?
From Google support:
Edit the sidebar
If you are the owner of a site, you can change whether the
sidebar appears, where it appears, and what gadgets are included in
it.
Getting to the sidebar editor:
- Click the More button near the top-right corner of your
browser window.
- Select Edit site layout.
Sidebar options
Once you are in the "Edit site layout" mode:
1. Click on Sidebar in the toolbar to enable or disable the
sidebar.
2. If you want to keep your sidebar, you can choose where it
will appear by selecting the pencil-shaped edit button on the black
"Sidebar" header. You can also change the sidebar width by entering
a new width, in pixels, in the edit dialog.
Adding and deleting gadgets in your sidebar
Once you are in "Edit site layout" mode, you can click on the +
icon in the header to add items.
Individual gadgets can be removed by hovering over a gadget and
clicking x. You can reorder gadgets by dragging them.