Auto Expire on entries I need to automatically set the expire date of a new entry (only) from a specific section.

I know that it's possible to do this via the frontend twig templates, however I need the user to have the flexibility to change the date from the default that's set if they want to.

So when they create a new entry it'll have an expiration date of today + 3 months, but if they wanted they could change this date to next Wednesday or whatever they wanted.

Thanks for your help
If you haven't solved it yet with a custom solution, have a look at my Auto Expire plugin. You would add a new expiration rule with the expiration date set to:

{ 'now'|date_modify('+3 month 5am')|date('c') }


or

{ postDate|date_modify('+3 month 5am')|date('c') }


and make sure the option to allow user changes is checked.