List of inputs to related action

Hi everyone,

I’m working on a task where the expected output involves a grid that allows multiple selections. The user can select three checkboxes and then click a button. Upon clicking, a small popup should appear asking for a meeting name corresponding to the selected three IDs. I tried implementing this using a related action, but it only works for single row selection. It doesn’t support multiple row selection. I also tried using a startProcess link, but it opens a large popup. Since we’re only filling in a single text field (the meeting name), it doesn’t look good occupying the entire screen. Is there any way to achieve this more effectively? Thanks in advance!