DavidAd, April 17, 2017 in Q&A
1) Please fill out your Signature -- see below.
2) You will need to do better than "add patio".
It helps if we know what title (Suite, Pro etc) and version (2014, 2015 etc) you are using. You can add this info to your signature by clicking on your user name at the top right of the page, click Account Settings, then Signature on the left. Doing so makes it always available, and this info is often key to providing a good suggestion
Resources for self help:
The built in Help System (always a good place to start)
In any Home Designer version and title the best way to add a patio is to demark its boundaries using invisible "Room Definition Walls" to create its area. Once it has a Room Dialog Box in place by drawing at least three such walls you can then define its floor height, ceiling height (if required) and whether or not the space has a ceiling or not. If you want a roof or covered patio having walls to define its boundaries is still required but instead of invisible walls you could use railing walls set to emulate posts and beams to support an arbor type "ceiling" or roof. The above is quite generalized due to not knowing exactly what intend and what software you are using.
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