When adding a record in a form, with Data
entry set to "YES", it is impossible to switch to another form.
Is this normal, or is it possible to change this?

Daniel

The form property set to Data Entry - Yes will only allow you to input to a 'new' single form! If you take the Yes off you will need to use the AddNew to generate a new record.
Data Entry set to YES is used when you want to open a form and enter new records only.