TopoDroid sketch, in cSurvey, are basically different cave/branch (better: branch).
But cSurvey need unique station's name in entire survey so you could use prefix to divide stations (A1....,B1....).
Right click on data table to access a function to add a prefix to a lot of stations without editing one by one.
So...to define an equate, you have to create a fake shot with the 2 stations that are the same real point:
A1-B1 without any data (all 0). cSurvey will detect this as equate showing you a = in the grid row header.
Equate are same real point so, this king of fake shots are not used in rings to spread errors.
