You need to provide us much more information. It is always preferable to give us the specific details of the specific situation along with the specific plan provisions that you do have.
So, do you have a participant with two outstanding loans? What are the specifics of each loan?
What does the plan say with regard to loan limitations (how many loans at one time, etc.)?
I doubt you an do what is being suggested. However, if the plan allows and if the numbers work, one possibility it to take a new loan that pays off the two existing loans (this assumes you don't exceed any loan limitation, but you didn't give us the necessary info to know if that is possible).
I'm going to leave it at that until you provide the gory details as requested above.
And for everyone else who lurks out there....
ALWAYS ALWAYS ALWAYS give us ALL the details; our business is completely fact specific, and without all the facts on a situation, we are just wasting our time trying to cover every possibility of what MIGHT be the question.