Auto-Populating with Data from Another Table

Greetings,
Here's the situation: I'm trying to create an employee sign-in form in OO Base that records the Employee ID (primary key for the table), last name, first name, department/position and an automatic timestamp. The thing is, I only want to have to input the employee ID with entry, and have the rest of the information auto-populate based on the data from a table containing the employees' information (which also uses the employee ID as its primary key). How do I configure the sign-in table to extract information from the employee data table based on the employee ID being entered? I'm still learning the basics of OO Base, so any input (the more idiot-proof, the better) is appreciated.
Here's the situation: I'm trying to create an employee sign-in form in OO Base that records the Employee ID (primary key for the table), last name, first name, department/position and an automatic timestamp. The thing is, I only want to have to input the employee ID with entry, and have the rest of the information auto-populate based on the data from a table containing the employees' information (which also uses the employee ID as its primary key). How do I configure the sign-in table to extract information from the employee data table based on the employee ID being entered? I'm still learning the basics of OO Base, so any input (the more idiot-proof, the better) is appreciated.