Updated June 24, 2020
WealthyBot is using an algorithm that will first trade roughly 18% of the amount you have in your exchange in USDT (Tether). The USDT (Tether) that you have in the exchange is treated as your investment capital by Wealthybot. It will then fluctuate this percentage based on market conditions.
You can also set these increments manually in each exchange by using the "Enable the average purchasing amount" feature. To learn more about this you can review the following article.