Most of the work I do in WordPress is editing (cleaning up, improving, changing the date of) my Posts. To get there, I have to click on "Dashboard", then click on "Posts". Every time. Can I please just click on "Posts"?
At the moment, on the top left of my site, I can choose from
Dashboard / Themes / Customise / Widgets / Menus / Background / Header
Only "Header" is of any interest to me. I would like to see a link to "Posts" added there, in that drop-down list. Please. Instead of "Themes", say. I mean, I only change "Themes" once every three years. I go to "Posts" every day.