To add pages to your website menu, login to your website dasbouad and click on Appearance>Menu
Some sites have multiple menus, so make sure you select the one you want from the dropdown and click select (or Create a new one)
Then on the left hand side scroll down to the page you want and check it (you may need to View All or Search if you have loads of pages!). Then Click on Add to Menu
It’ll appear at the bottom. You can drag and drop up and down to position it (Top will be left hand side of the menu). you can also make it a child item by identing as you drop.
Lastly click Save Menu at the bottom.