Data Cleanup From List With Multiple Entries?

I have a large database of service invoices. Since our invoice can carry multiple lines, the table in question might have multiple entries for the same invoice number. I'm trying to generate a performance metric dashboard for the service group by employee. Again, the employee can show up multiple times per invoice if he performs different work for each invoice.

I'd also like to condense the list down so there aren't any blank rows between the rows with data.

Ultimately, I need to find each individual invoice that each employee worked on and generate a list from which I can then generate an SPC chart. I'm willing to do this in a couple of stages if necessary. Primarily, I want to avoid using VB script if possible.

So, cherry pick service invoice numbers from a list when matched to an employee's name (VLOOKUP), consolidate multiple entries when that employee's name matches multiple entries of the same service invoice number, and condense the list (preferably as it's built) so there are no blank rows.