Go to Appearence > Menus > Screen options. Click “Custom Links” box
Stay at Appearence > Menus. Choose “Custom Links”
Fill “URL” and “Link text” boxes. Then choose “Add to Menu”
Go to created Custom Link and copy its URL. Then click “Save Menu”
Go to Pages. Choose Homepage > edit
Click “Edit this row”
Paste copied URL of created Custom Link into “Row ID”, Save Changes and Update page.