Want to add button to logon page which when clicked changes session variable
I'm new to F5 and please excuse my terminology as I am learning.
I've built up an APM logon process which presents a TOTP logon screen that collects TOTP and calls an API to validate it, the logon screen also contains a check box to manage their account. That check box sets a session parameter and I check for it as a part of logon, if value is yes, one goes on a different logon flow.
While effective, The check box is ugly .............. and I am looking to make it pretty.
I've been searching on customization of logon page but am not sure I am using correct search terms. How can one make a button or http link and when clicked sets a parameter which I can route a flow based upon it?
thanks in advance