Once you have setup your multiple offices in Admin Centre (see KB3059 - How do I create Multiple Offices?), you can then assign users to specific offices.
Assigning Users to an Office:
- In Admin Centre select Users.
- Select the relevant user from the list and select Edit User.
- Select Office and Contact Details.
- You will see that there are multiple offices in the Offices box.
- Tick the office(s) you want this user assigned too.
- Then in the Default Office Location dropdown list, select the users default office if more than one office has been selected above.