Report cards - signatures

Report cards - signatures

Is there any possibility to space the signatures at the bottom of the report. We do not use the signature of the parent only the class tutor, grade head and principal. When using this option the signatures are not centered horizontally on the page. We would like to be able to space the signatures of the class tutor and grade head on one line (first one to the left of the page and other one on the right of the page) and the signature of the principal beneath this to the left of the page.