Update Excel Macro

I have an excel scheduling macro that reads a list of reviewers choices and and assigns meetings according to when the applicant signed up. The logic is as follows: Looks at applicant #1 1st choice. Assign meeting to 1st choice if available. look at applicant #2 first choice. Assign meeting if available repeat until end of list start again with applicant #1 2nd choice I need to update it so if applicant #1's first choice is not available, it looks at the second choice and assigns a meeting before advancing to applicant #2. It should not produce duplicate meetings. This project needs to be done by thursday morning.