Oh, hey! Yeah, if you open up your HitBTC main trading screen, there'll be a button in green in the top righthand corner which says 'fund'. Click that and it'll bring you to a new page. It should show you a large menu of all wallets available to you. You should have a wallet for each and every token traded on HitBTC. If you don't see this, you probably just need to click the 'show zero balances' button on the left near the top. Now you can find your NET wallet, click either 'withdraw', 'fund', or 'transfer', and use the PubKey you get to make a token transfer as usual.
Fun fact: NET tokens are ERC-20 compliant (they meet a standard set by the Ethereum Main Chain), which makes them easier to move around and store in cold wallets.