To edit a transaction, first click on the down arrow at the end of the transaction row to expand it.

You will then be able to edit the date, description, amount or category of the transaction. Click the Save button to save any changes.

If you're GST registered, you can also override the category's GST setting. E.g if the expenses is from an overseas company who does not change GST, you can toggle off 'Calculate GST' and Solo will ignore GST on the expense.