One frequently asked question that we receive is how to add additional information to capture for a booking order in Sesami.
The short answer is: you do this by customizing your Shopify theme and not directly Sesami.
The longer answer (from Shopify's support page):
"You can collect customization information for products using line item properties. Line item properties are custom form fields that you can add to the product page, allowing customers to make choices or add information about a product. For example, if you offer product engraving, then you can use line item properties to let customers enter the text that they want engraved on the product."