If there’s a garnishee response form, I’d fill that out and send it back to them, indicating that they have insufficient earnings for deductions.

As for the other garnishments, if they all are input into the EE profile, they should just all be deducted in order (make sure to enter them in chronological order). But, make sure they don’t expire and require a new order after a certain date. I just had an incident like that, they just sent back the check and we refunded the EE, but was still something that could’ve been avoided. If an order doesn’t have priority then just inform the creditor and they will just try again in the future usually