At the moment the only way for users to easily find group releases is mangaupdates.
For legal reasons mangaupdates removed all links to scanlator sites but there is a tampermonkey script that restores them https://github.com/loadletter/mangaupdates-urlfix
Anyone can update a site with that script by clicking "Suggest an update" ( details at bottom of page https://github.com/loadletter/mangaupdates-urlfix)
You can set up a free web site with wordpress, blogspot or even simple text with ghostbin
There are many entries from small groups, usually single person, that list batoto as their site. Please update so users can easily find your scans.