Individual Refreshment is allowed for the first time when the competitors finish their first cycling lap by arriving back to the Competition Center.
A cca. 100-meter-long area - divided by zones according to race-numbers - will be designated for this purpose.
The pros will get the zone being closest to the speakers and then come the others in the order of their race-numbers. 
The huge grassy area is full of shadows in the morning, thus it is recommended to vew the race from here and to only go directly to the edge of the race track when the supported triathlete arrives. 

During the running part the triathletes will have 11 laps to run, thus the individual refreshment might play a pivotal role here.
The Center will be set in a way that you can continuously provide the competitors with these refreshments if needed. Benches and desks will be available in this area for you to store the 'ammunition' and to support your favourites from there.