Hi. I think that you should allign manual testing with automation. The best way to take the besty of an automation team, is to ask the manual team what would need to be automated, in order to save them some work. For example, maybe they need to test a new feature and to get there, they repeat the same steps over and over again, knowing that it works correctly. You shouldfirst of all have a meeting with the manual team, asking them what they consider should be automated. For example, if you need to assign a certain amounts of permissions to a user to test a new feature, but you know that the permission assigment is working, then that is candidate for automation. The manual team tells the automator: "Hey, I need you to automate that". That way, every time the manual team needs that configuration, instead of doing it MANUALLY, they will ask the automator to run a script to continue with their manual testing.
That way, the automator will be useful for the manual team. The goal is to automate as much as they can. That does not mean that manual testing will not be done. Not at all. Automation is a CHECKING which is used mainly for tasks that have already been tested manually many times