I want to restrict access to a group of users from the system dashboard website. This is the webpage I'm trying to restrict. I want the specific group of users to not be able to create issues/tickets via this website (we have a service desk portal set up for them)

What I've tried so far:
I've removed the application access for that specific group (jira-users) from Jira Software. They still have access to JIRA Service Desk so that they can access the service desk portal.

Is there another setting that needs to be changed? I'm still able to login to the dashboard site via the other group's credentials.