It seems a little more detail of my situation might help. I have four tables, a resource table with manufacturing days and number of people avaliable for ecch month of the year, a timekeeping table where hours charged against a job number is stored, a main program table where all active programs(by job number) is stored, and finally a table that is used to shcedule hours per week for each job number and resources assigned to each. Now the form I am working on is first based on the main table by job number, the grid is what holds the schedule part or table. I use the data table on the grid to set up the relationship with relationalexpression. Now to explain my other form methods: One textbox tells me how many hours have been charged to the job number, several textboxes give info about how many hours are avaible for the month I want to schedule - how many resources I have - how many hours have been scheduled already - and do I have a deficit or surplus in hours. The form is very active.