For multiple-system tests, Trading Blox's uses a set of system allocation controls to set percentage-based allocations for each of the active systems.
Clicking and dragging the Allocation Slider to the right or left will increase or decrease the current allocation values. The Current Allocation Value is displayed to the right of the allocation control for each system.
Trading Blox will allow allocations that total more than 100%. At first glance, it might seem that this would violate common sense and should not be permitted. However, since futures contracts have high leverage most of the time a single trading system uses a small percentage of the available equity for margin. Consider two trading systems each of which uses a maximum of 25% of trading equity for margin. A single account could easily trade both systems at the same time. Trading Blox's permission of allocations totalling more than 100% allows you to test this ability.
The trading equity used in the Fixed Fractional Money Manager to determine trade size is the test equity times this allocation slider times the leverage adjusted by the drawdown threshold. So each system can trade at 100% of the total test equity, or can trade at a smaller percent.