You can select as many parts as you want and it will prompt for a new value and change it for all of them in the order you have selected them.
The dialog shows the current occurrence value and if you click cancel even after the value was changed it reverts the occurrence name to default with the first available index number.
No you can use the Component Tags Post to show them in the drawing.
Here is the code, you need to have part selection filter in the assembly first active.
I have updated the code, here's the new code:
Dim comp As Object Try While True comp = ThisApplication.CommandManager.Pick( SelectionFilterEnum.kAssemblyLeafOccurrenceFilter, "Select a component") oTagOcc = InputBox("Enter Tag No: ", "Tag Prompt", comp.Name) comp.Name = oTagOcc End While Catch ' do nothing if error MessageBox.Show("Tag exists or user canceled", "iLogic") End Try