When your members join, they can add their address to their account info so when you schedule a meeting on the website and select a host from the drop down menu of your members, the address will be auto-populated in the location field and appear in the email reminders.
Add Your Address to Your Account Info
Click on My Account
Click on Edit Account Settings:
Add Your Address, Check the permission box and click Save:
The Address Now Appears on Your Add Meeting Form when that member is selected as a host
...And in the email reminder: