Add Contacts to Test Send Group
Step 1: Search for Contacts
Search for contacts in the [Search Box] of the left panel.
Step 2: Tag Contacts
Click the [Star] icon next to the contact name to tag contacts which you want.
Step 3: View Tagged Contacts
Go to [Tagging Basket] by clicking the icon on the top bar.
Step 4: Add Contacts to Group
On the bottom of [Tagged Items], you can see some buttons for bulk action. From drop-down menu [More Actions], select [Add to Group], then click the [Go] button next to it.
Step 5: Choose Append to Group
In the [Action] field, choose [Append to Group].
Step 6: Choose Test Send Group
In [Group] field, depending on your need, choose either [Test Send Group (Email)] or [Test Send Group (SMS)], then click the Save button.