VBA does not have a Sleep function.
Sleep
You can import it from Kernel32.dll like this:
Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Note that this will freeze the application.You can also call DoEvents in a While loop, which won't freeze the application.
DoEvents
While
Everything I've tried seems to hang the application, including Application.Wait. This seems to work though:
waitTill = Now() + TimeValue("00:15:00")While Now() < waitTill DoEventsWend
You can also pause the current macro context with Application.Wait T which won't block the whole process.
Application.Wait T