Drop Down List Display Issue

Hi everyone, I'm new to creating Adobe Acrobat forms, but have experience using Microsoft products to create forms.  I'm puzzled with an issue I'm having.  I created a drop down list and it has 23 different items to choose from.  However, I don't see an option that allows me to limit how many are displayed with clicking on the down arrow.  It lists all 23 items at once.  Is it possible to limit it to only show the first 8 in the list and have a vertical scroll bar on the right to allow the user to scroll down to see the other options in the list?  I can't find a property setting for this.