Open Source Document Management System | OpenKM

Dears,
i need to configure the document expiration, could you please guide me how to do it?

For it you need direct OpenKM technical staff intervention, because are some files what does not comes by default in trial or professional OpenKM. If you're a customer should use our customer support website for it ( talk with your sales team manager ), if you're user on evaluating our product, please contact to us http://www.openkm.com/en/contact.html and our marketing & sales team will provide some solution to you ( share with you one of our online demo for several weeks or authorize technical staff on helping you )