This article will show you how to point your domain to WIX
Step 1. Log into Plesk by following this Link
Step 2. Click on DNS Settings
Step 3. Click on the A Record name you would like to change
Step 4. Remove the IP address in the box and replace it with the Record given to you from WIX, Then Click Apply and OK
Step 5. Click on Update for the record to take effect
Step 6. You will also need to update the CName Record by clicking on the record name.
Step 7. Update the record to what was provided to you from WIX, Then click Apply and OK
Step 8. Once done Click on Update for the records to apply