Why can't I find the address I need in the list of auto-populated addresses when adding an address to a contact or opportunity?

Command pulls the list of auto suggested address from Google Maps. If the address does not exist in Google Maps, it will not appear on the list of options to select from. But no worries! You can manually add the address instead. 

How to manually add an address to any address field in Command:

First, you will want to click into the address field. Then begin typing nonsensical info so that the system will not have a suggested address to provide. For example: ggggggg. This will then pop up a button that says "Create Manually". Click this button and you will be presented with a manual address entry pop up. Input all the required address details and then click 'submit' to add the address. 

There are a few reasons for addresses to not appear in Google Maps. The most common case is for new constructions that may not be in the Google Maps database yet.