Set one point

Hello everyone,
I’m new to Rhino, so the question can be very simple. When I click on “set one point” in Grashoper I can only draw a new point but cannot select the existing point. Did I prepend something wrong Thanks in advance!

in Grasshopper, on the point parameter / component, right mouse context menu:
→ Set One Point

now in Main Rhino UI
default option is to select coordinates
check the command line / options
There is “Type”
click on it
Choose “Point”
now Rhino prompts “Choose Point Object to Reference”
select the point you want to reference

hope this helps -kind regards - tom