For those of you who have an iMoDo account and have been approved/authorized for "Premium" mode, here is the procedure to convert from "Legacy" (1Plus mode) to "Premium" (iMoDo mode):
1. Go to iMoDo Domain Portfolio page
2. Click on a domain to highlight it
3. That domain info should now appear in the right column
4. At the lower right, click on "Park Domain" to expand it
5. Click on the "IMoDo" radio button
6. Click on the "Park It" button
7. Back to the main display of domains, click on the "Build It" link on the right on that domain's line
8. At the bottom of the "Domain Builder" page, in the "Template Type" drop-down, pick "Premium Templates"
9. Click the "Save changes" button
10. Select any other options yo want on that page
and click "Save changes"
11. Click on the "Custom Settings" tab at the top
12. Select any setting you want on the "Custom Settings" page and click "Save changes"
At least for now, there does not appear to be a bulk change function - you must do one at a time.
It will take awhile for the actual domain display to be updated and display in the new format. Remember, in North America, the domains will still appear with the temporary Steamic templates, until Yahoo approves their feed for that region.
If it does not allow you to see the "Premium" selections, then your account has not been authorized for "Premium" mode (iMoDo) - you have to contact 1Plus/iMoDo.
That should do it. I hope this helps.
Let us know if it works for you.