how to install an app from a SMART TV SAMSUNG ?

Select "smart" on the remote. The current apps will appear.

Select "edit" (yellow button on the remote). An edit panel will appear at the bottom and a small box will appear to the top left of each app.

Go to the app and select it by pressing OK. A tick will appear in the small box.

Navigate to the bottom line of the edit panel and right arrow across to where it says "delete" (the delete option does not appear until you use the right arrow key).

Press OK. Agree with everything. The app will be deleted.

Go to the X box in the edit panel, press OK and the edit panel will disappear.

Another Dave