Disable Row in child table

I have created one custom doc in erpnext site there have added some conditions so i want to disable the one row from this table not entire column

so last field is checked those items should disable for that “send to…” field

Can you elaborate? Use the index numbers in the rows to explain what you’d like
to happen when “x” occurs.

It appears you have provided a screenshot of a child table. Please let us know if
you are trying to influence the behavior based on the parent doctype or the child.