Not very professional to just point the user to a google doc/sheet. How do you manage collaboration (i.e. allow users to add features but not make any random c

Not very professional to just point the user to a google doc/sheet. How do you manage collaboration (i.e. allow users to add features but not make any random changes or delete the whole sheet)? Feature upvotes? Do we ask people to raise a number by 1 in the "upvotes" column. A proper solution should come with a dedicated frontend. Like a FOSS alternative for canny.io