How do I remove the bottom border without removing the left border from all rows

I want to design it this way

Thank you, I think I have found the answer
She is in the "wellDrowCell" event
I took the coordinates of each cell tho I drew a line with this code
doc.line(x1,y1,x2,y2)
x1 -----> data.cell.x;
y1 -----> data.cell.y + data.row.height;
x2 -----> data.cell.x;
y1 -----> data.cell.y
`willDrawCell: (data) => {
if (data.section == "body" && data.column.index != 0) {
doc.setDrawColor(41, 128, 186)
doc.setLineWidth(.5);
doc.line(data.cell.x, data.cell.y + data.row.height, data.cell.x, data.cell.y);
}
}`
thank you @biloo-dev
Most helpful comment
Thank you, I think I have found the answer
She is in the "wellDrowCell" event
I took the coordinates of each cell tho I drew a line with this code
doc.line(x1,y1,x2,y2)
x1 -----> data.cell.x;
y1 -----> data.cell.y + data.row.height;
x2 -----> data.cell.x;
y1 -----> data.cell.y
`willDrawCell: (data) => {
}`