First, add the Younium app to your e-conomic tenant by clicking this link: https://secure.e-conomic.com/secure/api1/requestaccess.aspx?appPublicToken=BPH76dYye3Va8XKsTjuwqQM3cFC679FjvBQBlPRmiNQ1&redirectUrl=https%3A%2F%2Fapp.younium.com
(It is possible you get an error message (This page isn't working) after you have added the app to your E-conomic account, don't worry the integration has still been added)
In Younium, go to Settings, integrations, Visma e-conomic and press GET STARTED to connect your Younium legal entity to your e-conomic tenant. Fill in your App secret token which you have to ask your Customer Success Manager at Younium for, and your Agreement grant token that can be found in your e-conomic tenant in Settings, Extensions, Apps.
When the connector is up and running, these are the configurations available: