This tabular form automatically focuses in the next field when a certain number of characters is reached, and adds a new row once it reaches the last column in the last row - as described here: https://forums.oracle.com/forums/thread.jspa?threadID=2519256

1. Give the tabular form a static ID. I called this one focus-tabular.
2. Create a new dynamic action:
   Event: Key Release
   Selection Type: jQuery selector
   jQuery Selector: #focus-tabular input[type="text"]
   
3. True Action: Execute JavaScript code
   Code: (the object columns in the code below specifies the lengths for each column)

   
   var el = this.triggeringElement;
   var lastEleName = "f06";
   var lastColArr = wwv_flow[lastEleName];
   
   var columns = {
       "f03" : 4 
     , "f04" : 6
     , "f05" : 3
     , "f06" : 9 
   };
   
   var input = String.fromCharCode(event.which);
   
   
   if(el.value.length >= columns[el.name]
       && (/[a-zA-Z0-9-_ ]/.test(input))) {   
   
       var lastEle = $(lastColArr).size() >= 2 ? $(lastColArr[lastColArr.length-1]) : $(lastColArr);
   
       if ($(el).is(lastEle)) {
           addRow();
       }
   
       
       var baseSelector = '#focus-tabular :input[type="text"]';
           
       var nextElIndex = $(baseSelector).index(el)+1;
       $(baseSelector + ':eq(' + nextElIndex +')').focus();
     
   }
   
   

4. It is important to update the dynamic action and specify the Event Scope as Dynamic, so that and additional rows that are added are still affected.