The if block in your content template serves for handling conditional cases. When included, Bookly will assess the condition and generate the content accordingly. For instance, if you want to display a line with booked extras only when they are present, the following configuration ensures that the line appears only when extras are included in the booking.

You selected to book {service_name} by {staff_name} at {service_time} on {service_date}.
{#if extras} Additional items: {extras} {/if}
The total price of your booking is {total_price}.
Please provide your details in the form below to proceed with booking.