Warden allows for granular control over your veCRV balance. You decide how little of your balance a buyer must take in a deal with the "Minimum Buy" option. Setting the "Balance Limit" will determine how much of your veCRV balance can get sold on the market, saving the rest for your own positions if needed. "Maximum duration" determines how long buyers can buy your boost.
For example: Let's say you set your minimum buy to 20%, your balance limit to 80% and your max boost duration to 52 weeks. That means buyer A who wants to sweep all your boosts can at most borrow 80% of your veBoost for 1 year.
Once you configure your offer confirm with the "Update" button. You'll always see your default parameters as the ones you set them as.