There are different ways you can insert images on your website pages.
Text + Image Content block
This content block allows you to have an image with a block of text side-by-side. You can choose if the image is left or right.
It is ideal when the text is a small paragraph. This is what it looks like:
Image gallery
The Image Gallery content block is perfect to add one or many images.
The images are displayed two per row. For example, if you have 3 images, the 2 first ones will display on the first row and the 3rd one will be on its own row at the bottom.
You can reorder your images using the handle:
This is what it looks like on your event website: