The steps to reschedule a pledge vary depending on its GL Post Status, existing payments, and number of installments. Review the following articles for information on each situation. 

Pledge is not marked PostedHow to change the installment schedule on a pledge marked as Not Posted.
*Note: If Reschedule is grayed out on a pledge, it may be Posted or adjusted. 
When the GL Post Status is Posted: 
To increase the amount of a pledge:
Other situations:
For more information, review our Community blog series on rescheduling pledges.