Custom links: don't show grades/scores, don't show errors, send to the teacher automatically, set a time limit, ignore punctuation marks, capital letters and accents, etc.
Custom links allow teachers to set the following options before sending worksheets to students:
Ignore punctuation marks
Ignore capital letters
Set a time limit
Send to the teacher by default (students don't need to enter the teacher's email)
Show grades with or without decimals
Don't show grades
Show students' errors
Show right answers.
For this, you can click "custom link" just over each worksheet. Then you can choose your options and then copy the generated link to send it to your students.