AB-COM IPBox 250S PVR User Manual - page 27
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Multi Selection Mode
If you wish to lock the several channels continuously, press the right direction button
and then insert the password. You can lock one by one.
11.2.4. Rename
Change the selected channel’s name by using virtual key board.
Move to “Rename” option and press OK button then the virtual keyboard will appear.
In the virtual keyboard the Capital letter and the small letter can be alternatively appear
by pressing lock icon key(Next to DEL key). When renaming is done, to save the changed
name select ENTER KEY in the virtual key board.
To exit from virtual keyboard without saving settings, press OK button.
11.2.5. Delete
Select the channel you wish to delete and move to Delete option and press OK button
then enter your password.