You can editor your Space by clicking your icon in the top righthand corner, then under General, click "Space".
You can edit your formatting rules directly from this page. However, the Space logo and name can only be changed by clicking "Manage Organization on Nulab Apps".
The Space logo will be shown on the header of each page of the Space. The optimal image size is 60px by 60px. If the image is larger than 60x60, it will shrink to 60x60.
By permitting the Nulab Account login, users in this Space can log in with their Nulab Accounts.
Click here for more information on your Nulab Account.