Open the default Schola templates used by schola_word(), or
schola_pdf() (specify with format argument). The templates are shipped
with the package and are somewhat hidden in R library, so this auxiliary
function can help you dig them up.
Details
You can either edit the chosen template directly in its natural habitat (questionable short-term solution), or better – use "Save as" option and keep it and use it within the project directory.
See also
Other Report templates and formats:
copy_schola_template(),
schola_pdf(),
schola_word(),
schola_word2()