The owner can enable a whitelist when creating or after creating a presale. In the Whitelist type, they can choose "Whitelist with Tier."

• Additional tiers can be added by clicking on the "Add a Tier" button.
• For each tier, the owner needs to set up Tier 1 and its end time. During this period, only Tier 1 wallet addresses can contribute, similar to other tiers that have been added.

Click in “Add users to whitelist” and “Select Tier” to add wallet addresses:

After whitelist tier mode ended, you can enable Public Sale type to raise more funds: