There are lots of products that has different capacity from the database for example item1’s capacity is 5 and item2’s capacity is 10 if the user picks item1 then adding it regardless if it is children or adult it should not exceed based on the item’s capacity
Have a condition on the workflow Only when (the number selected) < item's capacity that means it can only be increased when there is sufficient capacity.
I think he means the number (1) in the screenshot you provide.
You can add conditions to the (+) buttons on the screen, and the condition should be something like: Element is Not Clickable WHEN (item1+item2 >= the item capacity)
the >= symbol means greater than or equal to, but in Bubble it’s joined