If you're working on your application and have run out of space to enter in a school, activity, place of employment, etc. first check to see if there is a button below your current entry for adding another. This is most common for your educational history page, but other pages can function this way as well. If there is no button, or if you've added the max number of entries and the button is no longer working for you, then you've likely hit the limit set by the school. If you would like us to confirm this, you can contact our support team.
The number of fields in each section of the form is set to the school's specifications, so they may only want to receive a given number of entries. However some forms give space for "Additional Comments" or "Additional Information" towards the end of the application. If your application has a page like this, you can enter information that didn't fit elsewhere in that section of the form. If this isn't an option provided in your application, we generally recommend entering as much information as the form allows, and then following up with Admissions to see if you can send them any additional information that did not fit in the application.