Hi @zagriyen,
I hope you’re well today! ??
Hmm, were you trying to merely add some fields to the Wiki? If so, you can simply add the fields to the Wiki’s custom post type ‘incsub_wiki’, as noted here:
https://premium.wpmudev.org/forums/topic/can-wiki-support-custom-post-types-or-add-templates
There’s also a bit noted in there about creating a custom template. There’s a great amount of detail on how that could be done here:
https://premium.wpmudev.org/forums/topic/custom-template-for-wiki-page#post-253133
Given that, you could create a custom template for the wiki page, even using the code from the templates at:
/wordpress-wiki-plugin/default-templates
Within that template, you could then include front-end functions from ACF like detailed here:
https://www.advancedcustomfields.com/resources/how-to/create-a-front-end-form/
Is that maybe what you were looking to do?
Please feel free to ask if you have any questions. We’re happy to help! ??
Cheers,
David