Passing data from one form to another

I am new to Access and have built a database with several tables. I am trying to create a data entry form that opens another form and passes info to the new form. For example, I have a form that updates table A, which contains a field called ‘workload’. I then have a workload table that also contains a field called workload. I have a button on the first form that opens a form based on Table b, and I want to pass the contents of ‘Workload from the first form to the ‘workload field on the second form.