how to add the control’s class name to the corresponding subgroup of the Qt Controls group

TC document shows

Recognizing Custom Controls
To command TestComplete to recognize your custom Qt controls, open your project’s Object Mapping options and add the control’s class name to the corresponding subgroup of the Qt Controls group. The subgroup name corresponds to your custom control’s type. Once the control is mapped, it gets all the properties, methods and actions specific to the Qt control of the corresponding type.

So what should i do for my self coustom qt application.

my app build with cmake + visual studio 2017