I have a read only grid contains 1 column with clickable link, when I will click on the link field then it will suppose to open a grid consist of related data below that row.
How I can achieve it ?
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There is already a similar thread going on - Grid Field Rows with Expandable/Collapsible Section
You cannot achieve that out of the box. You can look for a custom solution I proposed here - community.appian.com/.../128461