| Siebel Loyalty Administration Guide > Working with Siebel Loyalty Program Members > About Working with Loyalty Members Using the Siebel Application Interface > Restricting Loyalty Point Purchases
 The purchase of points could have certain limitations, which could differ from member to member based on each member's Dominant Tier and membership type. For example, a Platinum Tier member might be able to purchase more points in a single transaction (Transaction limits) or even over a period of time (Period Limits), as compared to a Bronze member. To restrict point purchases 
Navigate to the Loyalty Program Administration screen.
Locate the program and click its Program Id hyperlink.
Click the Point Purchase Setup tab.
Add a new record to the Point Purchase Setup list, and complete the necessary fields. Some fields are described in the following table. 
    |  |  |  
    | Point Type | Select Point Type. |  
    | Membership Type | Select the Membership Type. Choices include: 
Account 
Household
Individual 
Partner
 |  
    | Tier | Enter the Tier. |  
    | Minimum Transaction Quantity | Enter the Minimum Transaction Quantity. |  
    | Maximum Transaction Quantity | Enter the Maximum Transaction Quantity. |  
    | Purchase Period Limit | Enter the total number of points a user can purchase in a given period of time. This can be based on the Purchase Start Date attribute at the program level. |  |