It depends on the staking tho. Some places may do it automatically for you but others may have you claim the rewards and then send those to be delegated. Like if I have 1000 delegated and my reward says 20 coins, I can claim those coins and add them to the delegation so it can add more, aka compound interest. There is a delegation fee so best to gather a small reward stack and then delegate those. I usually try and do 20 coins at a time. Delegating rewards too soon may have you paying fees all the time, and waiting too long may have you miss out on those coins making you money. All depends on the coin you're staking and the method you're using. Like for Atom I gotta claim and restake for that, exchanges like Coinbase and etoro, do it for me, not sure how my grt works but I'm still early in the game on that. Some are automatically done, others aren't. Research the coin you want to stake and see what it says.
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