Hi Maria

Thanks for posting in the Lucidchart Community! This community post answers your question about changing the size of photos in an Org Chart. While it is not possible to adjust the sizes of the individual pictures you can adjust the scale of the page to increase the size of the document as a whole. You can also use the Org Chart formatting tools to adjust the placement of the images in your Org Chart within Org Chart shapes. To access these tools simply click on an Org Chart shape and click 'Shapes' in the menu on the left of the screen.

Hope this helps! Let me know if you have any questions!