Redirect directly to Salesforce Portal after Okta signup

When new user self registers in salesforce community portal page and we are creating user record in salesforce and making callout to Okta which sends link in email to user to setup password to sign in to Okta.
After password is set, user is directing user to Okta apps dashboard to select salesforce community portal app to go into salesforce community portal. Could you please advise for a way to redirect user to salesforce community portal directly instead of going to Okta dashboard screen.
We tried to use “redirect_uri” as parameter to Okta end point URL which has “/oauth2/v1/token” but redirection is not happening automatically. Could you please advise. Thank you