Yes, using this Magento wholesale module you can make it with the small code modification in Sales Reps and Dealers extension. Please contact us, and we can add the feature for the installation service fee.
Several Magento versions have a bug with admin orders, it does not depend on whether the Sales Reps and Dealers module is installed or not. We can research and fix the bug for the installation service fee.
A Sales Rep and Dealer are technically identical. For each particular sales rep/dealer you can create a special access in the Permissions tab, so that they will see only the orders placed by customers assigned to them.