Auto Delivery Limits

When Auto is selected as a delivery method, an option will be visible called Auto delivery limits:

When you select this option, you will see that the option to set a Delivery limit will be greyed out and deactivated:

Auto delivery limits is a more intelligent delivery limit system. Rather than one fixed daily or hourly cap, it recalculates the limit regularly so the booking is delivered in line with it's chosen pacing option and so it reaches it's set goal.
If a booking starts running behind it's set goal, the limit will be raised, if it delivers too fast, lowered. In effect, it takes off the peaks off delivery while keeping the set booking goals in mind.