If you have children working below the level of your curriculum assessment, you can add them to the curriculum assessment you'd like to assess them against instead.
To do this, go to Students > Assessments > Annual Policy > Manage Assessments. Select the curriculum assessment - it may be linked to a summative assessment so you may need to click + to find it.
In the Students section, click +Add.
In the slide over, select the students to add then click Add students. They will then appear on the assessment marksheet.