You use the discount pricing groups to assign customers to the wholesale pricing. So you will need to create a discount pricing group. This will group 1. When you assign customers to this group, they will be able to see the wholesale prices. All other customers will see the regular prices. You can create additional discount pricing groups, for which you will need to create additional wholesale pricing for. You would do this by adding another price in the wholesale price field when adding/editing a product.
Someone will correct me if I am worng, but you can add multiple wholesale prices by seperating them with a comma.
Let's say you have the following discount pricing groups...
wholesale, club members, friends
In the wholesale field when adding a product you would put...
5.00,4.00,3.00
$5 would be for wholesale
$4 would be for club members
$3 would be for friends
Then you assign the customer to the appropriate discount group, which must be done manually. When each customer logs in, they see the discount price for the group they were assigned.
I will double check the information I have to make sure this is how it is to be set up, but if I am worng, somebody please correct me ;)
Edit: I did double check my notes and this is how it says to add multiple discount groups. I will play around with it in my own shop and let you know how it turns out. I have been wanting to add a wholesale group anyway (I currently only offer discounts for club members).