When the plants are about 3cm high they are ready for planting outside.
Take them outside and water them well.
Push from the bottom of the module up to ease the compost and plants out of the module.
You should see the roots of the plant holding the compost together.
In your container make a hole big enough to plant the clump of carrots into.
Place the clump of carrots in the hole and fill the hole with soil. Press the soil down around the clump of carrots.
You can fit about four clumps in a 5 litre pot. If the pot is bigger you can fit more clumps in as long as there is about 10cm between each clump.