Enabling Line Selection in the cross-tab

Hello Experts,

I've a scenario wherein, i'll represent the data in a crosstab and allow user to select the line and then click on a button for some edits like:

Now I'm not able to select the row for edit in the crosstab but I can only able to edit the last column i.e. Comment and then click on edit

Is there something do we need to do in order to enable row selection ?

Thanks & regards,

Jomy