If you'd like to set up online order's item capacity, please refer to the following steps and modify on iPad :
Click Settings > Food Order Management > Select the module that you want to modify.
For example, Weekday, tap on its Order item capacity control
Tap on Unlimited under Total & Setting or the orange boxes on the right side.
In there you will be able to set up its provided period and capacity.
When finished, tap Done and then tap on the Done on the top right of the page.