As has already been explained and informed, you will have to do the formal appraisal for all your team except Vitaly (Who(who joined in Sep)September). Dariya, who was in charge of the department during the gap, will also contribute into the appraisal process. AlsoI would liklealso like to inform you that, Dariya was paid additionalan additional amount for the additional responsibilityextra responsibilities that she carried out during the gap fillingtime she was in charge. As you rightly said the grade attributed by Gabriel will be taken into consideration, keeping in mind that he did coveredcover the longest period. AlsoI would also like to inform you that, the appraisal period will be taken into consideraticonsideration on the day the staff member submits the appraisal form (ie.e., the 6th of November).