By selecting "Share Trading", the smallest sell unit can be 0.000001 shares. Or, you can use "Limit Trading", where the smallest unit is 1 share, and set the price you want to sell at.
Updated
By selecting "Share Trading", the smallest sell unit can be 0.000001 shares. Or, you can use "Limit Trading", where the smallest unit is 1 share, and set the price you want to sell at.
Updated