Suppose that you have a Search select advance field under company entity named tesmulti to select the people and you have two columns in it that are “Phone full number” and “First name”.
Now if you want to fire search criteria you will be able to fire the criteria only based on Person first name and not on phone full number.
Suppose you want your search criteria to be based on all the columns shown above then you just need to do the following.
Administration -> Customization -> Company -> Fields and select the field “comp_testmulti”.
Then check the checkbox named “Search on All View Fields” and then click the “Save” button.
Now you can enter some part of phone number or some part of first name and then fire your search criteria to find the person.