Hi there, @sampatel.
I'm glad to see you here in the Community. Let me share some information about the Standard User type in QuickBooks Online (QBO).
Once a user is set up to be a Standard user, you can limit their access and they can't also view your bank accounts. Check out this article, for more details: User roles and access rights in QuickBooks Online.
Depending on what access you want your manager to have, I suggest setting them up as a Limited User. This will restrict what they can and cannot do within your company file. For additional reference, please see this link: Add and manage users in QuickBooks Online.
Also, to help you track any activities in your QBO account, you can run an Audit Log report. This will show you the users who made changes and what they did to your books. Please, open this page for your guide: Use the audit log in QuickBooks Online.
Fill me in if you have an additional concern about managing your user's access. I'll be always around to help. Have a good one.
