Someone just asked me if it’s possible to lock your own ordinances if you leave the church, to prevent them from being done when you pass away. Is that possible? Is there someone I should refer them to?
There is an article in the FamilySearch Help Center that has the answer you are looking for. Click on the link below an it will take you to it.
Requesting that ordinances not be performed
This Help Center article also states what happens to that person's FamilySearch account if they withdraw their membership: https://www.familysearch.org/en/help/helpcenter/article/a-person-who-reserved-ordinances-has-died-is-incapacitated-or-had-church-membership-withdrawn
This article explains that those who withdraw their membership during their lifetime will require that others will need special permission to have ordinances done on their behalf: https://www.familysearch.org/en/help/helpcenter/article/when-should-i-obtain-permission-before-performing-ordinances-for-the-deceased
Hope this helps!
Adding here another resource. The General Handbook 28.3.8 Persons Whose Church Membership Was Withdrawn or Who Resigned Membership