How to change the top directory in LTspice?
You can add additional paths/folders/directories by going to Tools > Control Panel



Then select the Sym. &amp; Lib. Search Paths tab.



Since you are trying to add paths to symbols, add the paths in the top textbox:
Symbol Search Path[*]

Multiple paths can be separated on new lines, or by semicolons ; (which will be converted to new lines after closing the window).

If a path does not yet exist (perhaps you made a typo) then LTspice will ask if you want to include them anyway. Note that if they don't yet exist, they will not show up in the directory selection drop-down list.

If all goes well, you will see your new paths in the list: