A position on the MT5 platform can be closed only during trading hour, by:

1. Clicking on the "X" button next to the position, or
2. Double clicking the position and close, or
3. Offset the position by opening an opposite trade with the same amount.

The decision to close a position in futures trading depends on individual trading objectives, risk tolerance, market conditions, and strategy considerations, such as:

1. Profit-taking: Traders may close a position to lock in profits when the market moves in their favor.
2. Stop-loss: Traders set stop-loss orders to limit potential losses. Closing a position at a predetermined price level helps mitigate further losses if the market moves against them.
3. Change in market conditions: If market conditions change, such as unexpected news or economic data releases, traders may opt to close their positions to avoid potential losses or capitalise on new opportunities.
4. Reaching predefined targets: Traders may have specific profit targets or risk-reward ratios. Closing a position when these targets are met ensures disciplined trading and risk management.
5. Margin requirements: If the position incurs significant losses, it may lead to margin calls. Traders may choose to close positions to meet margin requirements and avoid liquidation by the broker.
6. Roll-over: Futures contracts have expiration dates, and traders may close their positions before expiry to avoid physical delivery or roll over their positions to the next contract month.
7. Strategy adjustment: Traders may close positions as part of their trading strategy adjustments, such as rebalancing portfolios or implementing new trading ideas.