Exclude folder from search but not from the project list

Question

I have a few different project with the same core.

All I need is to mark all not current projects as excluded to avoid searching through them (

Answer 1

As of version 2016.3 this is found under Settings > Appearance & Behavior > Scopes.

Or regardless of the version, just go to Settings and type "scopes" into the search box at the top.

Then just click the + symbol to add the scope, choose the folder you want to exclude, and click Exclude Recursively and apply.

Then when you search using CTRL+SHIFT+F, under Options > Scope select Custom and choose the scope you just created (thanks commenters).