Start by loging into Dinero
Go to Integrations
Click create new API-key under "your keys"
In the window pop-up, type DaybydayCRM, or it something that will remind you what the key is used for
Copy your key and save it for a while
Log in to DaybydayCRM (app.daybydaycrm.com)
Go to "Settings" and then "Integrations"
Insert your keyy under "Dinero Api key"
Then press "Synchronize"
If you have multiple organizations, a pop-up will appear with options for which one you want to sync with