How have you documented permissions that you have been granted to share material (consent forms, deeds of gift, etc)?

I have documented permissions using an IRB-approved form, although I am thinking through how that permission process might have to be modified to accommodate research participants with various levels of written literacy.Release form: https://drive.google.com/file/d/11puy13aKLRLFx-fm0HcUwZDOnAOQMf3a/view?usp=sharing (also translated into Spanish)