As an administrator of your platform, you must enable the Financial Tracking Feature in order to record all cash contributions as a gross monetary amount paid in support of your community, and values in kind donations such as equipment, property and time. 

Setting up the Feature

Go to >> settings >> Approval and Moderation tab and turn on the option 

Go to >> setting  >> Revenue Generation and set the currency

Go to >> setting  >> Reports >> Find the Financial Contributions section and switch it on

Doing so will allow the community administrators to upload receipts and record other reports to track all finances associated with your events and opportunities.