General :: Handling Concurrent User Access

I need to develop a database for HR department for hiring. There are about 30 departments in the office and these departments are distributed among 12 HR officers. Each HR Officer works on 2 or 3 of these departments at a time throughout the day. Currently the HR department is using Excel Workbook to keep record of each department (hence 34 Workbooks in use). I want to convert this system in Access.

Now the problem is that I am confused how to handle these department. To keep record, every department has exactly same type of data. I was planning to make one table for each department and make one form to enter data into each table (hence total 30 tables for departments). This sounds weird approach. I have done this to avoid concurrent access problem.

If I make one table to keep data of 30 departments and one Form for entry, will it be possible for 12 users to open the same DB, open the same Form and Insert/Update the same table at the same time? What approach should I follow?