Establish TxD Support phone/email for external use #5

Need to setup phone support for the organization. Steps should be something like the following, in O365 admin:

• Create a shared inbox - we'll call it Support - that will have an email address assigned to it support@techbd.org.
• Assign any of our users to the shared mailbox to be able to send/receive emails at that address.
• Purchase a Teams Phone license and a phone plan for the license.
• Assign the new phone number to the Support shared inbox as a resource.

Once all the above is done, test what happens when someone calls the support number. Need to understand if calls go to the assignees of the shared inbox. If not, we may need to set up call forwarding to our Teams accounts. Verify this can be done without additional phone licenses/plans. If that isn't possible, we may need to have everyone who is on support have a phone # assigned to them so calls can be forwarded to individuals numbers.