Add chopped onions, tomatoes, grated coconut, grated carrot, lemon juice, sev namkeen, sugar, salt and chopped coriander leaves, mix all the ingredients well.
Cover it and keep it aside for 5-10 minutes or until the poha becomes soft.
After 5-10 minutes check it, if you feel poha is still dry, then sprinkle some coconut water or plain water, mix well
But take care not to add more water else it becomes mushy.
At this stage, you can taste salt and sugar and lemon juice, and add more salt, sugar and lemon juice if needed.