Specifies the Session timeout in minutes when you check the Remember Me checkbox on the authentication dialog. The default is 5 days.

This value is specified in minutes so you can specify this value in OnProcessInit() or you can override the property:

DEFINE CLASS MyProcess as WWWC_PROCESS

*** Override auth timeout
nAuthenticationTimeoutSeconds = 60 * 60 * 24 * 10   && 10 days

... 
ENDEFINE

o.nAuthenticationTimeoutSeconds