It's scattered and disorganized like this administration.

You work on real missions, alongside the teams building them

OK alongside, but not ON, the teams building them? So apparently not actually building them myself? And also, does anyone build missions, or do they perhaps build systems?

For a few days, access is granted to this work.

Access is granted to whom? And to what work, the work I'll supposedly be doing? Hopefully yeah I have access to my own work. Or do you mean the work of the people alongside whom I'll be working on missions (the builders of the missions that is)?

The number is extremely limited.

What number?

The window only lasts four days.

Oh now there's a window analogy too. And they already said "a few days" so one of the two is redundant.