As a workaround you could add a Balloon Note from the Table tab of the ribbon (Balloons drop down) or Annotate tab (Annotations drop down menu). You might be able to create a text note with a leader and use a space as the text.Position the leader of the note to connect to your balloon. Using this video you can add multi leader dimensions and multi leader notes in Creo Parametric drawing. This Creo Parametric tutorial shows how to rearrange BOM balloon quantities using the Split, Merge, and Redistribute commands. Adding Multiple Leaders to a Balloon.