How to modify circular and parallel operations in the properties-panel

Developers Modeler
1

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As shown in the figure, I want to modify whether the sub process circulates and whether the sub process expands in the properties-panel. How should I implement the operation

2

In general, the properties panel always reflects what the underlying BPMN 2.0 XML defines. For example for the parallel loop characteristics

<bpmn:task id="Task_1">
  <bpmn:multiInstanceLoopCharacteristics isSequential="true" />
</bpmn:task>

The replace menu is exactly setting those properties, e.g.

Implementing it inside the properties panel would probably mean using the same commands to set the correct properties in the XML.