Mouse movement

hello.
we are working in to a 3d adventure game in style of dreamfall.
we can use keyboard to move around the character in unity.
But, we need another control option for the point and click Talk-Take-Look abilities of adventure games.
is there any asset for this or any tutorial?

thank you

You could check this out

And the other parts of his tutorials as well, he goes over mechanics that allow you to pick up papers and read them, display dialog on screen (the “text tool tip”, which could be implemented for things other than just tips), play audio when you click on something, take and hold keys, and other things that might be useful to your project.