It's not possible to have wingpanel on more than 1 monitor

[Heath Paddock]

It should be an option to have wingpanel placed on multiple monitors. Perhaps the monitor number could be specified through a command line argument so that any combination of instances/monitors could be achieved.

[Cassidy James Blaede (cassidyjames)]

We made a design decision a while back that the panel would be on the primary display only, at least by default. I'm not sure if we want to support having multiple panels with multiple indicators and everything. Kicking to UX team to discuss.

[Danielle Foré (danrabbit)]

I'm going to mark this as "opinion". I'm also unsure why you would need to have the panel on two displays. It mainly contains "heads up" information and isn't really a large point of interaction.

[swizzle (el-ferreira-deactivatedaccount)]

I also work with two monitors on Yosemite and indeed the second panel i use very very rarely. I only use the second monitor to have other apps opened that's all.

[Sam Hewitt (snwh)]

I agree with Dan here.

Also, on Mac OS it is rather necessary as they have tied the menu system to the panel –i.e. it's a huge point of interaction.

[Corbin (crutchcorn)]

I personally think that a double panel for double monitors would be a VERY helpful, even if just hidden in dconf-editor

[Brian Chandler (ncmason)]

The biggest pain point for me is not having the Applications dropdown on all monitors (large widescreens.) The clock would be nice also to make it easier to watch my time as I work (keeping it in peripheral.)

[Alexander Smith (alexandersmith)]

Personally would love this for the same reasons Brian mentioned.

[Shikhar Raje (shikharraje)]

Requesting for the same feature, following the steps mentioned here: http://meta.elementaryos.stackexchange.com/a/67 .