Someone asked me how to make a panel with launchers, I wrote it in PM but why not make it public 
So here is the procedure in XFCE
- right click on the top bar, in “Panel” click on “Panel Preferences”
- click on “+” on the top right corner to create a new panel
- the new panel should automatically be selected in the dropdown near + and -
- click on “Items” tab
- Click on Add
- Click on “Launcher” and then on “Add”, click for each item you want in your panel
- Click on Close
- Now, for each Launcher, you need to configure them for a single program (otherwise they turn into a drawer/dropdown menu, but you may want that)
- Select the launcher, click on the tool icon near remove
- Click on “+”
- Search for the program to be run by the launcher, click on it and click on Add
- From here, you can either add more launcher to this icon, turning it into a dropdown, or click on Close and configure the next launcher
- Done