How to manage directory - Opencart Template Editor?

Question

opencart

Good evening.
I work with opencart 3, please help.
Through the module "Installation and extension" installed a new theme.
via ftp created its own directory domen.ru/catalog/view/theme/newtema
via Modules/Extensions edited the theme directory and specified it.
On the site, the template worked from another folder and I can edit files via ftp.
I go into the design - Template Editor - I see the selected store by default and the folders that are here /theme/default/template/

And how can I see the folders that are here /theme/newtema/template/?
Thank you.