Folder file on left has disappeared from message screen. I need it back

Please do not start multiple topics for the same problem. Continue at your original topic at https://support.mozilla.org/en-US/questions/1112583

Previous Answer mentioning layout was useless,

Explain that in more detail at https://support.mozilla.org/en-US/questions/1112583

I can NOT get to "layout" as advised previously, in order to click the task folder". Answers to my repeated question have been repetitive and useless. I NEED HELP getting folders listed on left of message window, Currently, my messages fill the ENTIRE window. I can get this window or the Thunderbird useless help window or sometimes, worse yet. the "What is new in Thunderbird" window I am getting desperate . I need to get at the folders list that was always displayed to the left of messages in New Comcast. Thanks

Which part of 'Continue at your original topic at https://support.mozilla.org/en-US/questions/1112583 ' didn't you understand?

I need to get to "layout" as I was advised to do. If I can get there, I am supposed to tick "folder pane" But I can not get there. I have struggled with this question now for days and no one has helped me solve it. I am about to give upon Thunderbird.

Move your mouse to the left edge of the screen. Watch for it to change to a double headed arrow. When it does left click, hold and drag to the right. Does this drag the Folder Pane out?

The Thunderbird window must be maximized for this to work.

Thread locked, please continue on original thread as mentioned above. See Mozilla Support rules and guidelines if this doesn't make sense to you.