Hi @michellel1140 ,
By default ACC have support to English, French, German and Japanese.
But for other languages, Yes you can manually modify few of the UI like delivery, campaign, recipient etc inside console.
Example, If you want to modify delivery form UI in custom language, for the fields like label, internal name, delivery code etc either you can modify it to custom language in delivery data schema by modifying 'Label' of the particular attribute, or you can modify the label of it in Delivery input form.
And for other words/sentences like General, Analysis, Typology etc in tabs, you can modify it in delivery input form.

Similar way, you can utilize data schema and input forms to modify rest of the UI.
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