In the process of importing a contact list from a file or adding contacts using copy and paste, you need to match the column name with loaded data. At the top of each column, select the required name from the drop-down list.
You also can create a new field by clicking Add a new column in the drop-down list. In the opened dialog box, enter the name of the field, select the type, and set whether this field will be public. Then click Save and the new field will appear in the drop-down list.
You can exclude some columns from contacts by selecting Ignore this field from the drop-down. After all the column headers are selected, click Continue in the bottom right corner.
Note: Because of excel date and time format variations in case there are Custom Fields with the date attribute the accepted format is CSV only.