Add an Element or Caption to the end of a Record or Template
Adding an element or caption at the end of a record or template is slightly problematic, because the typical usage of pressing <Insert> to add an element will not apply.
To get around this, use the the right-click menu:
Right-click the indicator column in the record or template
Choose <Append>
Follow the standard steps to add an element or caption to the resulting blank label box as appropriate