Action button for creating relation on view page

// Resources\ProjectResource\Pages\ViewProject->getHeaderActions():
        return [
            ...
            Actions\CreateAction::make()
                ->model(Shift::class)
                ->label('Add Shift')
                ->form(fn (Forms\Form $form) => ShiftResource::form($form)),
            ...
        ];

// Resources\ShiftResource::form(Forms\Form $form):
        return $form
            ->schema([
                ...
                Forms\Components\Select::make('project_uuid')
                    ->required()
                    ->relationship(name: 'project', titleAttribute: 'name')
                    ->searchable()
                    ->preload()
                    ->optionsLimit(20)
                    ->columnSpan([
                        'sm' => 2,
                        'xl' => 3,
                    ])
                    ->hiddenOn(ProjectShiftsRelationManager::class),
                ...
            ]);