Operator being able to edit graphic text

the operator's at one of our workplaces want to be able to Edit/update some (graphic) texts dureing run time.

is there a way to do this?

what i would like to make is so that the texts in the program are click able, and once clicked they will show a pop up screen where the operator then can type in a new text whice will immediately update the text in the runtime.

idoes anyone know how to do this, or in what direction i can best focus my attention for this?

thanks in advance,

Arriën