Before you add machines to a machine catalog, consider the following:
To create new computer accounts, specify:
To use existing accounts, click Browse and select computer accounts in Active Directory or click Import and specify a .csv file containing a list of account names. Because XenDesktop manages these accounts, either allow XenDesktop to reset the passwords for all the accounts or supply the account password (which must be the same for all accounts). Make sure that you import enough accounts for all additional machines you want to create.
Studio performs machine creation as a background process so that you can continue to work. Because XenDesktop creates VMs sequentially, this can be a lengthy process when you add a large number of machines to a machine catalog. Machine creation continues to completion even if you close Studio.