Defaulting values in timesheet CATS

Hello,

Have a requirement to default WBS/rec costcntrs elements into timesheet application (cat2 transaction).

what I am planning now is, when logging into the timesheet I update catsdb table with the WBS element values for the sppecific date, so when the user is in the cat2 screen he can see the defaults. But this is a very inefficient method since a db update is involved.