Choose list - multi choose - Google spreadsheet

Question

I have a question, how can I create list like in picture below but with possibility to choose more than 1 element. So I want to have in on cell two names "John, Adam". I finde some ways like: https://gist.github.com/arthurattwell/aa5afc178624bdd6f46c2d0d28d06136 , but this will be not celar for other users.

Regards

Answer 1

Google sheets only supports single selection lists. One way to show a multi select list is with the example you linked, which displays it in a separate popup dialog.

Another, better way is to display the multi-select in a sidebar that always auto-opens from onOpen (as checkboxes since you will have more space) and use setTimeout from the client sidebar maybe every second to show/hide them when the sheet selection is on the right cells.