Shared access session with webtop

This is from the cookie documentation online with F5: Session Cookie: Persistence Session cookie persistence functions only on BIG-IP LTM+APM deployments. For BIG-IP APM deployments with connectivity resources (such as Network Access, Portal Access, etc.), you cannot set BIG-IP APM cookies as persistent. This is by design, as session cookie persistence can present a security risk. For some deployments of the BIG-IP APM system, as with Microsoft SharePoint, cookie persistence may be required. When you select cookie persistence, persistence is hard coded at 60 seconds.

How can I override this security behaviour?