Note: The manual approval feature is only supported with Classic Customer Accounts
We have an option for manual approval available in the Wholesale Signup Form so you can control which customers accounts to approve.
You can also set up email notifications to get alerted whenever a customer registers through the Wholesale Signup Form.
You can search for the specific customer in the "Customers" section of your admin account, review their details, assign any tags that you deem fit and then click on "Send account invite" option as shown below. This is an option that shows up on the top right corner of the customer account if manual approval is set.
Clicking on this option would send your customer an email from Shopify to select their password to complete the registration process and log in.