The Budget allocation option allows you to choose the number of strategies and spread allocation of your capital among those strategies. For example, you may allocate 30% to ETH-BTC-USD, 20% to BTC-USD, 10% to ETH-USD, 0% LTC-USD and so on. The total allocation should be 100%. You may also choose to allocate 100% of the capital available on your exchange account to only one strategy.
Please note that if you surpass the 100% it will be considered as leverage once this feature is turned on.
If you would an example to see how you can change your allocation, you can watch the tutorial below: