Right now, there isn’t a way to set a specific limit on the number of proposals sent per day with your custom Auto Bidder schedule. Auto Bidding will send proposals to all jobs your scanner finds during the day, unless there’s an error or you run out of connects.
To control how many proposals go out, you can make your scanner more specific by adding filters, excluding irrelevant keywords and setting the custom bidding schedule (not for 24/7). The more targeted your scanner is, the fewer jobs it will detect, which helps keep the number of proposals lower and avoids spamming.