The best will be to check the admin roles and what each can perform in Okta, so you can choose the best option that will fit your needs. https://help.okta.com/en/prod/Content/Topics/Security/Administrators.htm?Highlight=administrator For what you need you will either have to set it as Super Admin or a combination of Org admin and App admin. But the best will be to have the a look at the documentation provided above and chose the best option for you. We do not have a recomended option, as it depends on your needs.
I hope the above answers your question. You can always open a case with us and we will be happy to assist you on any Okta issue/question you might have.