Switching between UI15 and UI16

In a new Geneva or Helsinki instance, the UI16 plugin is automatically active. If you want to switch between UI15 and UI16, click on System Settings , and you'll see a button that says Switch to UI15 (or Switch to UI16 if you're already in UI15):

Don't see it? Make sure that the appropriate plugin has been enabled. Go to System Definition | Plugins and activate the UI16 plugin. You may want to log out and back in if you don't see the new UI:

By default, after UI16 is activated, all users should see UI16. Administrators will see the Switch to UI15 button, but you'll need to specify some additional roles if you'd like to let other users switch freely between the two main UI versions. To do that, make sure that UI16 is activated, and navigate to the sys_properties table using .list in the application navigator like we learned previously. Search for a system property called glide.ui.ui15_switch_roles. It doesn't exist by default, so if you don't see it, just click New at the top-left of the list view, and create it. The Type value should be String. Set the value to a comma-separated list of roles for users that are allowed to switch between UI15 and UI16.

There's a little trick here. Like with many properties that expect a string containing a comma-separated list of values, you can allow all users to switch between UI15 and UI16 freely, by setting the value of this property (glide.ui.ui15_switch_roles) to just a comma. No text or spaces, just a simple comma. The system seems to treat this to mean simply all.