As a manager, you can invite users to your location. To do this, go to the location tab and click the plus sign at the top right of the screen. You'll have the option to add a new user. Fill in the user's first and last name, email address, and role, and make sure the proper location has been selected. You can also give this user a hire date.
After you've filled in all this information, click create. You'll see a confirmation at the top of the screen that this user has been invited and now they can find their invite in their email. This is how you can invite your team to expand share.