una/modules/boonex/messenger/template/vc-message.html

<div class="bx-messenger-jots-message-vc">
	<span class="text-xs">
		__info__
	</span>
	<bx_if:part>
		<span class="bx-messenger-jots-message-vc-participants">__participants__</span>
	</bx_if:part>
	<bx_if:join>
		<button class="bx-btn bx-btn-small ml-2 bx-messenger-jots-message-vc-join-button" onclick="oMessenger.onStartVideoCall(this, __id__, '__room__');">
			<bx_text:_bx_messenger_jitsi_vc_join />
		</button>
	</bx_if:join>
</div>