Yes, it is possible to allow users to manage the licenses without giving access to your account. Please have a look here.

https://goto.archi/blog/post/delegate-license-management

To do that follow these steps:

1 - Create user accounts on archi, for the users that you intend to give access as license managers.

2 - The owner of the licenses invites then those users to become license managers using the page under:

https://goto.archi/licensemanagers/customer/index/

Is there a way to let all users in my network query current license usage without giving them access to my user account? Wouldn't have to be detailed, just to see whether all the licenses are being used or there's at least one left.

(I understand that not allowing manual release of a license is a matter of policy. This issue is vaguely related, but I think it wouldn't necessarily affect your revenue if it was possible.)