Help With Adding Arrows and Alert To A Coral + Bands Trend Indicator

I have managed to combine 2 indicators (Coral & some bands). They seems to give very good initial entry points for a trending market.

But I am falling to add arrows and alert on cross over of the bands & Trendlines

Can you please help me add down arrows and alert when Band2 crosses Lower Trendline, and Up arrows when Band1 crosses Upper Trendline as illustrated in the attached image.

I have also attached the indicator.

Your help is very much appreciated. Thanks in advance