To move the cursor a page up and down, you have to use SHIFT-PAGE-UP and SHIFT-PAGE-DOWN by default. If you want to scroll a page up and down and move the cursor, you can change the key bindings.
[
{
"context": "Editor",
"bindings": {
"pageup": "editor::MovePageUp",
"pagedown": "editor::MovePageDown"
}
}
]
Open a large document and use Page Up and Page Down to move the cursor up and down.
The Zed Editor documentation shows a link to a default.json file, where you can see all default key bindings.