Hover over the message or file you want to send and click the right arrow that appears on the right (figure 1).
Figure 1 Forward message
Add the people or chats you want to forward the message to, optionally write a comment for context and click Send (figure 2):
Figure 2 Add recipients and a message
Forwarded messages appear in the chats they are sent to with a grey background.
Note: The room owner can choose to disable forwarding. In chat details if you are able to copy messages, the box Members can copy room messages will be ticked. If not, the forward arrow on messages will be disabled.