I believe you can't on those tablets, as they aren't running a new enough version of Android. However, should you wish to try, the instructions are below.
First, you need to be using a tablet that is running at least Android "Marshmallow" (6.0) or newer, or be able to upgrade to it. Second, you will need the instructions I am including below. And third, you need a tablet that has not been restricted by the manufacturer from making this change. Which does happen.
NOTE: If any of the steps are missing on your tablet, or they don't work for you, then you have a tablet that either has an older Android version or has been restricted by the manufacturer. If that is the case, you will not be able to use this information....