From_dataset and if-then statement HELP!

cc1680×523 52 KB

I have this dataset - I want that if the ‘type of user’ is a ‘tour guide’ they will have that specific full_name from another data set called ‘tours’ that I created.
Or -
if type_of_user == tour guide then full_name == (option1,option2,option3…)
How can I do so?