For NEO, you can do it on a virtual PC or even just hold them on Binance and Binance will distribute GAS.
As for Ark and Strat you have to leave your computer on running a node (It takes very little power), but if your computer gets shut off for a little while its okay because the program will catch back up to the network. For Steem, you have to send your to your Steemit wallet and power up. Now for Ven Chain, Ven is different because they do not have their own wallet so it is more complicated. I am in the process of doing this because I only just bought into Ven. I plan to set it up for staking today, I will make a tutorial once I have completed it.