Click on 'DEVEL' tab, open 'Script', open 'admin', right click on 'folder.folder.your_script_name.exe' and select 'Set delay'
script set delay "folder.folder.your_script_name.exe" 0 day {1;};
script set delay "folder.folder.your_script_name.exe" 0 day { #Here you MQL source code (must be return true or false); true; };