Paging multiple paging groups simultaneously

Is is possible to page multiple paging groups simultaneously? For example… Accounting, sales and HR have their own groups and I’d like to be able to page them individually but also page them at the same time say, as the “first floor group”.

We have a very large number of phones and would rather work at the group level then the individual phone level most of the time - is there another strategy that will provide the same functionality?

Thanks

No a page group can only include devices not other page groups.

I would create a new first floor page group and include all first floor phones.