Can I trade multiple evaluation and funded accounts at the same time?

Yes you can trade multiple evaluation accounts and funded accounts at the same time. Check out the Ninja Trader Apex Investing Copier to make this easier to do at https://apexinvesting.com/ninjatrader-8-trade-copier-for-multiple-accounts/ 

If you want to trade more than one funded company then use a VPS as shown in this video