Where is my "rules" button on paperUI?

Setup, Configuration and Use Beginners
#1 
Platform information:
    Hardware: Intel Core i5 / 8GB Ram / 4TB Raid 1
    OS: Ubuntu LTS 16.04
    Java Runtime Environment: Java™ SE Runtime Environment (build 1.8.0_151-b12) - 64 Bit
    openHAB version: 2.1.0 - release build -

I have seen on youtube that on the left of paperUI that others have a button “rules”, but I don’t have that one. Can it be my Interface has to be updated? And when yes - how?

Any help would be highly appreciated!
Thanks! Christoph

#2

That menu is probably only visible if the (experimental) rules engine is installed.

#3

Ok. Got it by installing the addon and restarting the openhab service. Thx for that.

One more question: I added a “test”-rule in the GUI. But it doesn’t appear in “/etc/openhab2/rules”.
Is there any other folder where the rules are stored?

#4

Can’t say where and how the rules from the new (experimental) rules engine are stored, however the location you have been looking at is the folder only for the present rule engine which takes text-editable rule files.