what to use??Vlookup and hlookup or vba?

I am really confused about what to use for this data.I have included the instructions for the task as well.Any help would be appreciated.
i cant upload a sample output right now,i ll try to explain as well as i can.
the aim is to automate the calculations that are required to fill the light green fields in sheet 3.
for example if I enter the name of my trainer against his trainer id in sheet 2..based on the data from sheet 1 the calculations have to be made and the fields in sheeyt 3 have to be filled.
Also please note that the entries with status value "error"should be ignored for the calculations but have to be considered for the bottom table count.

AttachmentSize
TASK_02_FB Report Format.xlsx49.84 KB
TASK_02_Instructions.doc24.5 KB
TASK_02_FEEDBACK_Form.pdf27.74 KB