It is possible, but it's easier to just add a row outside the repeating section, styled the same as a repeating section. If you do want to use a repeating section, something like this should work on ( 'sheet:opened' , () => { getSectionIDs ( 'repeating_pages' , idarray => { if ( idarray . length > 0 ) { return ; } else { const rowid = generateRowID (); setAttrs ({ [ `repeating_pages_ ${ rowid } _page` ]: 'Journal' }); } }); }); you need to rename the ALL CAPS words with the appropriate value from your sheet: SECTIONNAME: the repeating section name ATTRIBUTE: an attribute within the repeating section. It's best to assign some placeholder text to an attribute in the section. so you could change 'write something here' to whatever you need it to be, just so that something is created.