Oscilator probe C1-94, incorrectly connected

The oscilloscope probe does not have a 1: 1 and 1:10 switch button. C18p is bound to R 9M09 at the probe output. The minus is not grounded. It should be connected to the other end of the trim, adjustable capacitor. To remove 2 wires from a switch to put R9 + 9M09 to the 2nd output connector. I don't have a diagram. How do I attenuate?
Thank you in advance.