Yes, your team members can have the same contact details. This is typically needed for Junior teams that have siblings or twins in the same team.
On the 'Manage Team' page (https://app.teammo.com.au/manage-team), enter the names of the team members and relevant contact details. When you send a payment request, your team members will receive a text message.
In the example above, when you send a payment request to these two team members, the contact person will receive two text messages as both team members have the same details listed.