When you are editing your game page and preparing your game for submission, there is a More menu which you click, then click Admins.
Then this page appears, where you can enter each member's Itch URL and click [Add admin].
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we try to upload but there was the -2 minutes time, and we almost did it or give up into old version, however here is the Link to link into jam: https://investus.itch.io/jamholistic3d
Submit your game at
https://itch.io/jam/389797/add-game/2891725/662537?
token=nlExFaxhbLuEOWqZ9iyNnmNpHjI
Itch broke up the URL so make the above into one URL and you should be able to submit your game there, thanks.