The following formula is used by myself to display 4 prizes at a time, scrolling through them:
<prizes orient="vertical" max="0" showAmounts="true" roundOff="true" showRecipients="true" rotate="true" rotateMax="4" rotateDelay="8">
Max 0 is display all prizes – so 6 would be first 6 etc, 1 would be 1st (providing it is 1st on your list of prizes)
Roundoff is to remove decimal places so false would display £80.35, true would display £80
Rotatemax is 4 prizes at a time
Delay is 8 seconds to move on to next 4 prizes
You can add additions lines of text like the following where <br> represents a new line of text:
Tournament Over <br>
Prizewinners: <br>
<br>
<prizes orient="vertical" max="0" showAmounts="true" roundOff="true" showRecipients="true" rotate="true" rotateMax="4" rotateDelay="8"> <br>
<br>
Hope this helps!