Double time signature in MuseScore

There is some music where you want the time signature is alternating, for example 4/4 in every odd measure and 2/4 in every even measure.
In that case we usually would like to show the following time signature:

There is no native support in MuseScore for that, but easily can emulate that.

Remove the first time signature in MuseScore

If you try to delete the first time signature, by selecting and pressing Delete, you get an error message: "The first time signature of a piece cannot be removed". You might try to hide it, but it would be ugly:

But if you add an empty measure at the beginning, then delete that, you can achieve the following:

 See a small animation that shows how to do this: