Cut 1m or longer sections of tubing
Boil some water and put in a bowl you can take to site
Put the cut end into boiling water for a minute or so
While holding the tee, rotate the tubing onto the tee
Repeat to build your chain of Ollas
Using appropriate connector, connect input end to water tank
Listen for water filling the ollas
It's satisfying to see the fill line rise
Clamp open end and leave for 24h to check for leaks
Place the ollas where you want them
Dig holes to seat ollas with just top exposed (or even slightly deeper)
Cut 4mm tubing leaving slack so you can run it easily
Cut and use joiners to add segments, if required
Connect to tank
Connect tap to outlet end
Wait until water comes out of the outlet tap
Close outlet tap