On the main map seach for the point you want

https://app.nrds.io/map

You can turn off the clustering to see the individual points

Click on your point and select "edit"

Copy the geometry from the edit popup

Save and close the form

Select Draw -> Plants

Draw a plant point on the map

Then paste the geometry form the first point into the geometry field overwriting the geometry where you drew the point

Fill out the rest of the form and save