Perplexity Spaces are now called Projects. Your existing Spaces moved over on their own. Here's how to use one.
In the left sidebar, select Projects, then New project. You can also click the plus icon on the Projects header. Give it a title of up to 50 characters.
You can add a description, an icon and a color, so it's easy to spot. Open the Project, select the Settings tab, and open Context. Add instructions, like the answer format you like.
They're used for every query in the Project. Each Project has Files. Upload files one by one or as folders, and every task in the Project can use them.
Start new searches from inside the Project, so they're saved with its instructions and files. Projects are private by default. To invite people, click Share, and pick Can edit or Can view.
A Project can have a Brain, a memory built from the work done in it. To turn it on or off, open the Project settings and go to Memory. It's used in Computer sessions, not regular Search.
The full tutorial has every step, and the fixes.