ERC20 tokens do not allow any implementation of masternodes.

There will be "masternodes" consisting of 600,000 VOISE each in some other form. Last I heard, you will be able to send your VOISE tokens to the team and lock them for a given period of time during which you will be rewarded with a % share of VOISE's profits. After the period, you will receive your tokens back and are free to do with them as you please.

But do not take my word for it, the team should release a statement regarding all this in the near future.