Yes, you can use more than one machine at a time, and you can also use more than one user at the same time .
Yes, you can print bar-code for the items registered in the program .
Yes, the program can deal with the financial statement and extract of the balance income, the budget, the profits and the income list to reach the Income statement and audit balance .
Yes, the Management can define the authorization of each user and what s/he can see .