Step1:Click on the tool in the webinar to which you want to add Custom Domain as shown in the image below reading ‘Edit/View Webinar Details’.
Step2: Go to the ‘Webinar Branding’ tool as shown in the image below:
Step3: Open the ‘ADD CUSTOM DOMAIN’ dropdown and click on the ‘CONNECT SUBDOMAIN’ button adjacent to the domain to which you want to connect your subdomain as shown in the image below:
Step4: Click on the ‘eye’ button against the added Subdomain as shown in the image below:
Step5: Enter the Domain name and click on ‘SAVE DOMAIN’ button.