Change circuit topology in Smith V4.1

Hello, i do not know if i am asking in property forum, but i did not found a answer. Is it possible to change circuit topology (in shematic), or delete elements in Smith V4.1 (from Frit Dellsperger).

fritz@dellsperger.net

It seems that it could not be deleted. I set very small values instead, for example 0.000001 Ohm.
You may try this one online: https://www.will-kelsey.com/smith_chart/
elements could be deleted, but no inserting in the middle of schematic.