A WordPress page is build using blocks of content. To add a block make a new line, click on the plus-button and pick the block you want to add. If the block you wish to add is not present among the six suggestions, then search for the block you wish to add or click “browse all”.

Example

If you want to add the Step block, then make a new line, select the plus button, type “step” in the search input field, and select the “Step” block.