Extension for plugin quiz master next -- v.4x

Scope: Please accept the proposal if all points could be solved (optional not included). And you can offer a guaranty that the system will work properly. If not recommend please another solution. May you want adapt or develop another plugin (see WpCues Basic Quiz and/or Quiz Tool Lite. If you choose another plugin there must be all or almost all features as in quiz master next present. Keep the code and material open and documented for next works. 1. Pre-Add on / “Multi Selecting Topic Feature” for actually version of plugin „quiz master next“ a. The work is to add the feature “Multi selecting Topics (as Preliminar, I (AND) IV / (or) All Topics”) at front end” following the actually plugin category system and functionality E. g. when the user select 3 Topics he gets the amount of questions preselected by system from the selected topics by him (check please if is possible to provide this same feature for Subs “Multi Selecting Subcategories”). b. I mean whit Pre-Add on that this work for this feature should be packed so that this feature could be Installed/desinstalled actived/deactived per Zip in WP>Plugins in another Website (Domain). If this point is not possible, take to much time please tell me how long or recommend another way to let extend the plugin via add on. (optional). c. The files and codes that you use must be well documented. Send please zips, codes, and instructions. From last work too if needed. d. Be sure that the option select all topics “Todos los Titulos/Capitulos” works properly. Here must come all topics and Questions! from the selected Subcategory (Leyes). From last work. e. Be sure I can update the plugin (optional) 2. Build ability to edit/delect Categories (Ambitos, Subcategories (Leyes), Topics (Titulos/Capitulos) in WordPress Admin Panel whit out the end user/client must go to phpadmin or somewhere outside WordPress. 3. Let the form of hello-quiz short code appears for select/build Quizzes at from end after or bellow following text. “It appears that this quiz is not set up correctly” (before translations, the text should appear in future in Spanish.) This happen when users selected options not match any results/questions. Here: [login to view URL] 4. Global Translation of quiz master next a. Prepare loco translation (or similar plugin) whit .po and .mo files so that I must/can translate just one time e. g. following strings and they will appear always translated in the plugin/quiz sections (like: Text, Options here [login to view URL]). Here are not all strings listed but they belong to the group we have to translate: Please fill in the comment box below. Welcome to your… Be sure to click Submit Quiz to see your results! You are only allowed 1 try and have already submitted your quiz. This quiz is for logged in users only. Unfortunately, this quiz is limited the amount of entries it can recieve and has already reached that limit. Name (and user data) Submit Quiz Comments Next Previous I just scored %CORRECT_SCORE%% on %QUIZ_NAME%! I just scored %CORRECT_SCORE%% on %QUIZ_NAME%! %QUESTION% Answer Provided: %USER_ANSWER% Correct Answer: %CORRECT_ANSWER% Comments Entered: %USER_COMMENTS% Welcome... (and all welcomes)