You can find the description of panels in the manual.

You can't set "INVISIBLE" for a panel, and you can not add a button after a panel was created. All panel elements must be already defined within the panel definition. Panel colors affect the images of all panel elements.

http://manual.conitec.net/apanel.htm
http://manual.conitec.net/button.htm
http://manual.conitec.net/apanel-rgb.htm

Please check out the examples how to create a panel and define a button. If you then still have problems, please ask again on the forum and describe your problem in more detail, with a code example so that people can see what's wrong.