In GA drawings, we frequently create notes which reference the ballooned items. For example, we may have a note that says 'Assemble items 18 and 19.BOM balloons are circular callouts in an assembly drawing that show Bill of Materials information for each component of an assembly view. Dbl click the cell below Qty. This is the way you can create custom balloons in cre parametric and you can use multiple symbols as a custom balloon in the same drawing. This Creo Parametric tutorial shows how to rearrange BOM balloon quantities using the Split, Merge, and Redistribute commands.