Somebody in the chat was unable to see their trades on the Chart today (green and red triangles). Here is how to add or remove them.
09/23/2019 UPDATE: in the new version we move it to the Chart Area Configure window, right click the chart->Chart Area->Configure Area
Thank you to Seth who reported this in the chat
Double-click the chart, or right-click and select Study Config
Highlight Price (Candle)
Click Config
At the bottom, there are options to Show Trades (executions) and Show Orders (open stop/limit orders)