A good way of adding a row or rows of photos to a page is to add a gallery.
Now click on “Add Media” above the icon bar. Select “Create Gallery” from the menu on the left hand side.
Now click “Create a new Gallery”. The pictures you selected will now be displayed in a gallery.
You can now select pictures either from your media library or upload files from your computer. For example to make a row of 4 pictures click on 4 pictures to select. You probably want to make sure all the images are the same size before you start. And Click Create a New Gallery.
Now you can select “link to” to be set as “none”. Change the number of columns to 4 if you would like just one row of pictures. (You can make this 3 or 5 etc. if you like to make it look how you wish.)
When you have finished select “insert gallery”. The gallery is now added to the page. Then click on “update” to update the page.
Now view the page and check it looks how you wish. You can edit this by clicking on the gallery on the edit page and selecting edit.