You've set the buffering to 2-Pessimistic Row Buffering. If you want to buffer several additions, then you'll want either 4 or 5, pessimistic and optimistic, respectively, table buffering.

>I don't want to update the table on each appending. I want to let the user add an undefined number of records ant then accept or cancel the operation. Only then I will Update or revert the changes to the table.!
>>Do you do a TableUpdate() after the record is added?
>>
>>>I've created a 1-to-many form with the form wizard, and modified the grid to allow user to add
>>>new records to the grid. The first time a record is added, there is no problem, but when I try to add a second record, the following message appears: "File is in use by another user".