The 'Usage' tab shows the majority of locations where an account has been set up to be used for posting. This can include:

• events
• fees
• donation campaigns
• resources
• taxes
• default posting accounts

Double click on any row to see the detail window containing the posting account. The first example shows what one might expect for a normal setup,

This second example shows that events are being posted to a tax account, which may assist showing why things are getting into an account that you didn't expect.