New additional backdoor login page


We are in a process to integrate our confluence with OKTA in out test environment . I have integrated the same and now :—

whenever user keying it redirects user to dashboard with credential using OKTA.
when user click logout link from dashboard , it redirect user to page where i am displaying login link, which on click it take user back to dashboard via OKTA. which is correct.

now i want one backdoor login page(adminlogin.action or any page with login behaviour) i.e so that i can login via admin .

Can i achieve this?please help.