duration of being in logged

[Mecho]

Hi ....

1 - I become logged out when i'm not active in my site so soon . is it possible that we can make duration longer ???

2 - when we click on the Editor buttons Like " " or " " the cursor can not be placed in the middle of the code . it goes to the end so we should click on it then move the cursor in the middle then put something !!!!

crazy how can i make it right ?

Thanks in Advance

Edit : Screen shots added . mine is no 1 . normal Tag is no 2 . so 1 should be like 2 .

Thanks