Get a TMSWeb application to open the form.

Just a small thing. When I open any TMSWeb app I have to manually open the main form.

I do not understand what you mean.
The project source typically is:

  Application.MainFormOnTaskbar := True;
  Application.CreateForm(TMainForm, MainForm);

and this TMainForm is opened automatically when you navigate to the URL of the app.
What are you doing different?

Sorry I meant in the IDE.

This seems a shortcoming in connection with the project type we had to change to make it a web application. We'll investigate if we can somehow interact with the IDE to make it open the form automatically.