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If you do not already have resource calendars see below for how to create these.
Creating Resources in Google
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Log in to the Google Apps administrator control panel. The URL is https://admin.google.com.  Navigate to Buildings and resource → Resource management  Using the large (+) plus button, choose to Add new resource.  Populate the fields as required, then click ADD RESOURCE.  Select the newly created resource from the list.  Copy the Resource email found on the left side of the screen.  |
Enable External Sharing for Secondary Calendars
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To allow ResourceXpress to view, create and modify calendar events in the resource calendars external access needs to be granted for all secondary calendars via the Google Admin. From the Google Admin home, select Apps → G Suite → Calendar.   From here, scroll down to General settings and click External sharing options for secondary calendars.  Choose Share all information, and outsiders can change calendars, this is a requirement for ResourceXpress to view, create and modify calendar events.  Click Save. |
Add Resources to Admin Calendar
All resources being added to ResourceXpress will require their shared settings to be modified.
To access these settings you will need to access these calendars from an admin account.
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Log into Google Calendar with your Admin credentials https://calendar.google.com On the left side of the screen, click the (+) plus symbol alongside Other calendars.  Choose Browse resources from the list.  Find the required resources and click the checkbox to subscribe.  Once all the required calendars have been added, use the back arrow found in the top left to return to your calendar.  You will see these calendars now available under My calendars. 
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Server Host Name | www.google.com | ||
Server Port | 80 | ||
P12 Certificate | Use Choose File and select the download downloaded .p12 key file. | ||
Global Resource Credentials | |||
Resource Login User ID | Enter the service name used when creating the service account on Google.
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Resource Login Password | notasecret
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Resource Login Domain | Enter the domain added to the service user account email.
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