Configuring Vertical Scroll for Check Box
To enable vertical scrolling for a check box group form item, you must set the 'ControlGroupVertical' property to 'true'. A sample code snippet is provided for your reference:
this.fm.registerHandler(CFEC.PRE_INITIALIZE, function(fm, event, fieldname, value) { return { 'OTHER_ACCOUNTS_CHKBOXGRP': { ControlGroupVertical : true; } }; }); //Here, OTHER_ACCOUNTS_CHKBOXGRP is the Item ID of the check box group form item.