Description / Business Use Case:
Currently, when multiple team members use a Shared SMS Inbox, any outgoing reply defaults to the shared group phone number. While the internal team can see who is assigned to the thread, the end customer only sees the main company/group number.

There are many scenarios where a customer initiates contact via a main department number (e.g., Sales or Support), but once a specific representative takes ownership of the conversation, they need the flexibility to continue the conversation via text using their individual direct line without losing the historical context of the chat thread. Manually pivoting to a new thread from a personal line is clunky and breaks the conversation history for the rest of the team.

Proposed Feature / Solution:
Add a dropdown selector or toggle within the Shared SMS Inbox chat interface that allows the responding user to choose their outbound "From" identity.

Option A (Default): Reply using the Shared Inbox number.

Option B: Reply using the user's individual direct RingCentral number.

If Option B is chosen, the message history should remain visible within the shared inbox for visibility, but the customer should receive the text from the individual user’s direct number so future direct communications route straight to that specific agent.