The config files for lxpanels should be found in the directory
It looks something like the example below and should be pretty straightforward. To reload the config after editing, you must first kill lxpanel:
You'll notice the panels disappear and then you can start it with the new config with something like this (Note the trailing ampersand which will run this process in the background):
lxpanel --profile LXDE &
I say "something like this" because in this case my profile is called LXDE. However, if you look in the directory
/home/user/.config/lxpanel/ you may see a few different directories. Each directory located in
/home/user/.config/lxpanel/ is a profile.
config file, can be edited by preference dialog.
For me, the output of
ls /home/user/.config/lxpanel/ displays the following profiles(directories):
default Lubuntu LXDE. Mine are in LXDE so I use
lxpanel --profile LXDE & to run lxpanel.
Below is an example of a panel I have that just displays the clock plugin at the right side of the screen. The config file itself is
/home/user/.config/lxpanel/LXDE/panels/left which is misleading since it's located on the right. Depending on how you created the panel, the name may not indicate the actual location of the panel so make sure you are working in the correct config file.
# lxpanel <profile> config file. Manually editing is not recommended.
# Use preference dialog in lxpanel to adjust config when you can.
type = dclock
type = dclock