Yes.
Users from the same company can share credits. One user needs to be nominated as the main user, that will be responsible for purchasing credits. All other users in the same company can then share these credits. The History > Transactions menu will show all transactions to this shared account, and all users from the same company will see the company's credit balance displayed in the top menu.
By default, Sagitto will assume that if there is more than one user for the same company, then the first person to register is the main user. If this isn't corrent, just raise a ticket with the Sagitto Support Desk.