Crowdin store - how to add mine personal apps?

I wrote a simple appliccation just to see if it works. If yes, i will try to connect Crowdin with needed to me service. My question is, how to install app not from the store into Crowdin? Like, in browzer you can just upload things from .zip using manifest.json, in Android phone you can do the installation not from a play market as well… How about Crowdin in this case?

A manifest inslatation, should be supported.
At least it says so here

Just checked in my project, go to Personall settings and click this dropper-popupper (dunno the word), then use Manual installation