You can set limits for each pair on the amount of base currency to invest in a trade. The trading limit can be set as an absolute amount or as a percentage of the available base currency.
When selling, you can choose to sell the entire currency of the position or keep a certain amount of the currency of the position.
Gunbot can be configured to ignore dust: small balances below the minimum trade size.
A fund reservation function is available to permanently store the absolute amount of the base currency.
If you wish, you can automatically withdraw the received profit in BTC.