To add a link to a specific location on a different page, follow the same steps for creating a named anchor on the same page.
Anchors point to a specific place within the page. On the page where you want to insert the link, use the Linkit button to find the appropriate page. After using Linkit's autocomplete feature to find the appropriate path to the destination page, you will have to manually add the "#anchorname" to the Link URL.
Click "Insert link" to add the link to your named anchor (on a different page).