To see the audit trail of activities made within the report, all you need to do are these steps:
​STEP 1: Click Transactions in the menu bar
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​STEP 2: Select a transaction which you want to view 

STEP 3: On the upper right side click on "Notes & Activities"

​STEP 4: Click Add Notes, then this window will appear on your screen

STEP 5: Fill up the fields or insert an attachment then click Add note. You should see your note in the activity logs