Action logging, when enabled on the TIBCO Spotfire Server, can help monitor user actions, in this case the time spent by a user on a specific page. 

You can find more information on how to enable action logging in the TIBCO Spotfire Server Installation and Administration manual:
https://docs.tibco.com/pub/spotfire_server/12.0.2/doc/html/TIB_sfire_server_tsas_admin_help/server/topics/enabling_action_logging_and_system_monitoring_using_the_command_line.html

This article  describes a way to use the Action Logs to get the time spent on a page by a web user.

Note: Action logging can be done to either a file or a database. This article assumes that a database is used, using SQL queries to extract the desired information.

The Action logs database stores the information with the action "SET_PAGE"

When a user opens a particular tab in an analysis, action "set_page" is logged.

The below query can be run to get the 'set_page' result:

SELECT  *
  FROM [database name].[ACTIONLOG] where Log_action like 'set_page'

Example: SELECT  *
  FROM [spotfire_actionlog78].[dbo].[ACTIONLOG] where Log_action like 'set_page'
=====================================



In the above screenshot, you can check the user "Spotfire" has moved between pages "Example dashboard", "Marking", "Filtering" etc listed in the "ARG1" column for analysis "Introduction to Spotfire" and Session_ID "d7be0e...".  The time spent can be calculated by subtracting the Logged_time between 2 "set_page" Log_action  or between "set_page" and "close" Log_Action

• Enabling action logging and system monitoring using the command line
  • https://docs.tibco.com/pub/spotfire_server/12.0.2/doc/html/TIB_sfire_server_tsas_admin_help/server/topics/enabling_action_logging_and_system_monitoring_using_the_command_line.html
• Action log categories
  • https://docs.tibco.com/pub/spotfire_server/12.0.2/doc/html/TIB_sfire_server_tsas_admin_help/server/topics/action_log_categories.html