Multi-user option not available after modifying build.prop in Lollipop I edited the build.prop file in /system/ as per
Multi-user option not avilable in Android one after Lollipop update
namely, adding two lines of code to the end of the file:

fw.show_multiuserui=1
fw.max_users=5

I have rebooted and nothing seems to have changed (i.e., there is no user icon in the swipe-down screen)
I checked and the lines of code are indeed in the build.prop file.
I'm running 5.1.1 on a Lenovo Yoga TAB 3
Any ideas..? Thanks in advance!
I had a similar issue and searched for "users" while in the Settings app and it took me to a usable dialog box just as if I had got there from the icon. I added a user and it all worked.  So you just have to search from the magnifying glass in the Settings screen then click on the user you wish to switch to.