We are aware that certain transactions are being categorised as 'Others' and can be useful to manually change the merchants. Currently the functionality on Money Dashboard Classic doesn't allow for changes to be made to Merchants.
Our development team is aware of this feature request and takes this consideration when making improvements to the application.
Currently a work around is to assign the merchant's name manually as a part of the transaction's description and then filter the transactions to see them.
How to edit/change the description of a/multiple transactions?