Grid Tooltip Arrow

I’m using DHTMLX grid and have added a tooltip to the some of the columns using html. I would like to understand how I would add a pointer to my html depending on where the tooltip has been positioned. Note I’m not doing anything to position the html, appears the DHMTLX Grid code is correctly placing the tooltip.

I am using dhtmlxSuite v.8.3.6 Professional.

Could you please, clarify the expected result in details?

We were trying to place an arrow on the tooltip window to point to the cell. We decided to do it with bootstrap. Thank you for your response.