You can advise your personal shopper on what substitutes to pick if any products are unavailable. You can also leave preferences in a note. For example, if you’d like green bananas rather than yellow.
You can do this by selecting the ‘View full basket’ button on the right of the screen at the bottom of your basket. Select the row of the product in the ‘Substitutions’ column, then add a note.
Your personal shopper will try their best to accommodate your preferences, however this may not always be possible. For example, if the substitute you prefer is not in stock or if there's no suitable substitute available.