Copy all contents of include to Data Folder/MQL5/Include then compile with MetaEditor (F7). Then move Trading Panel.ex5 to Data Folder/MQL5/Experts.
Copy all contents of include and MT4-1.1-SL5-b1545.zip to Data Folder/MQL4/Include then rename Data Folder/MQL4/Include/Expert/Trading Panel.mq5 to Trading Panel.mq4 then compile with MetaEditor (F7). Then move Trading Panel.ex4 to Data Folder/MQL4/Experts.