Administrator resigned

[Deleted]

We are a small organization.  I have recently taken over as manager and find that we have no Office 365 Administrator.  Presumably the previous manager had that role.  What can we do to create a new Administrator?

[#2]

If you know the credentials of the Office 365 Administrator, you can use it to create a new Admin or make your account as an Admin. Also, if your account has a capability to raise a support ticket to Microsoft, you can request assistance to them and they will help you with your concern.