For personal banking only, the Budgeting & Spending (Money Management) tool allows you to categorize your transactions and add memos to individual transactions.
To change the category on a transaction or to customize the memo, please see this help guide: https://onlinebanking.embassybank.com/support/solutions/articles/70000644274-how-do-i-recategorize-my-transactions-or-put-notes-on-them-