Changes to the basic profile can be made by editing the Facility information for either end of the path.
For example, you can change the transmitter antenna height by editing the left side record. First, click the Edit button near the bottom of the Fixed Facility – Transmit record:
Change the value and Save the record. When you click the Draw button, the change will be shown on the profile:
(If you check the “Auto Draw Path” option in the Configuration menu as shown below, the profile is redrawn automatically when changes are made.)