To edit a transaction, you'll first want to locate it on the Transactions page of your CoinLedger account.
Once you've found the transaction you would like to edit, click the three dot menu to the right of the transaction and press Edit transaction.
From this menu, you can make a number of changes to the transaction, including changing the transaction type (under Classification), changing the timestamp, or adding/removing an asset.
Once you have finished making the changes you would like to apply, press Save.
If you're simply looking to change the transaction type (or classification) of a transaction, it may be easier to do so by following the steps in this guide.
To learn more about manually classifying your transactions, please see this guide.