Question: 

How to translate the label of a Participant URL from an Engage Meeting Page?

Answer:

Participant URL is a Call object field. The API Name is Cobrowse_URL_Participant_vod__c. It stores the Remote Meeting URL for the participant. It displays in a popup window when the user clicks on the blue information icon from Engage Meeting page.

To translate the label of the Participant URL in the popup window, do the following: 

1. Navigate to Setup --> Administer --> Translation Workbench --> Translate.
2. Specify the Language and then select the filter criteria as shown:

Related Documentation:

CRM Help Documentation: Engage Meeting Overview