Holding both long and short positions within one trading account at the same time for same product (also known as a "lock position") is permissible on VT markets.
When holding the hedging positions, the investor can use the "Multiple Close By" or "Close by" features in MT4 to hedge/close the lock position.
However, we do not accept hedging between two accounts or more. We have a professional risk team and IT data collection to conduct trading behavior monitoring and analysis.