(a) Examples of what "in addition to my declared Programme" could entail...

1. You would like to add another Major (i.e. do a double-major)

(b) Examples of what "replacing my declared Programme" could entail...

1. You would like to replace your unspecified/undecided status with a major in Psychology
2. You would like to replace your current declared major (i.e. do Psychology instead of...)