Bulk Post Credits provides the ability to add credits to multiple accounts in a quick and efficient way.
Slide-out the left navigation menu, click Memberships > Billing Manager.
Select the accounts you'd like to add the bulk credit to.
From the lower right corner, click Bulk Actions > Bulk Post Credits.
Enter a "Title", "Amount", "Description", "Reason".
Select if these credits should apply to outstanding charges (recommended).
When satisfied, click Post Credits.