Hii Alexandra Wagner,

     After the removing the Events menu from the xml you needs to add som code into the method _compute_menu

	​	​total_events = self.env['event.event'].sudo().search([('is_published','=',True)])
	​	​menus = self.env['website.menu'].browse(website._get_menu_ids())
	​	​main_menus_id = menus.search([('url','=','/default-main-menu'),('website_id','=',website.id)],limit=1)
	​	​for event in total_events:
    	​	​	​if event.name not in menus.mapped('name') and main_menus_id:
        	​	​   	​	​	​	​	​	​self.env['website.menu'].create({'name':event.name,'url':event.website_url,'website_id':website.id,'parent_id':main_menus_id.id})
	​	​menus = self.env['website.menu'].browse(website._get_menu_ids())

​After adding this code into the _compute_menu it dynamically adding the event into theasus websites main menus.If you want to seen an demo then i can send you.​