Hi everyone ! I am from Ukraine, so sorry for mistakes in my text
I have one little question, how can i connect different installed mods into one mod, or something else, for using all of the objects it in the scene editor ?
I would be glad to hear your answer...
Thanks.

You can do that by copying all of the .inis and pictures and .lua files out of their respective .rtes into your own .rte, for example, "Combined.rte". Then, you make an Index.ini and include all of the .ini files from the different mods.

And then go into all the .ini's and .lua files and change every FilePath to their location in "Combined.rte".

It is working !
Thank you !

Alternatively you could have referenced the other mod's files inside one main .rte DataModule and it would have been fine - not all the resources have to be in the same .rte folder: it counts as a single module anyway.
That probably would have been easier.

Yeah, but that'll create dependencies. It's like "For this mod/scene to load correctly you must also have mod x also installed" kind of thing.

Ah, true. For things to be released the first option suggested is definitely the best.