Your MemberHub fundraisers will automatically be displayed in your online store after the first payment has been processed in your experience.
You can view the settings of you fundraisers, but clicking the Fundraisers link on you Store Products Page.
The fundraisers list will show you any previous or current fundraisers.
Click Edit Fundraiser to Select a Category for you Fundraiser.
Click on the X or Checkmark in the Visiblity column to adjust the Visibility in the same way as any store item.
Additionally, you can sort the Fundraiser Location using the Product sorting tool.
How to Sort Products in Your Store