pfSense certificate validity period - macOS

how to change certificate validity period to no more than 825 days to access webgui from macos ?

You manage the certs under the certificate manager

https://docs.netgate.com/pfsense/en/latest/certificates/certificate-management.html

thanks Tom
I understand that i manage them in the certificate manager However I can not edit default webconfigurator certificate. there is no such an option.
is this means i have to create new cert ?

Yes, create a new certificate and then you can tell the web config to do so.

Got it. Thanks. I thought i can simple edit the existing one.