If managers in your league don't have access to a computer, you can create teams for them under your Yahoo! ID.
Please note that teams can only be accessed by signing in with the Yahoo! IDs used to create them. So, if you create teams for these managers, you'd need to complete any roster changes and transactions for the rest of the season. You cannot transfer teams to other Yahoo! IDs if these managers later gained computer access.
Also, remember that teams cannot be added to a league after any portion of the draft's results have been entered.