На 6 месяцев были поставлены цели,

На 6 месяцев были поставлены цели, после выполнения которых была договоренность об изменении оклада. Цели выполнены

Результаты (английский) 1:

At 6 months, set goals, after which there was an agreement on changes in salary. Objectives met

Результаты (английский) 2:

6 months have been set goals, after which there was an agreement to change the salary. Objectives are made

Результаты (английский) 3:

At 6 months, there have been set goals, after which it was agreed to change their salary. Objectives are met