Changing Dialog Cards / Image Pair Content

A couple of features I would like to pay to develop on existing Content Types.

1. For the Dialog Cards conetnt type I would like to remove the Turn button for certain sets of cards that do not have a back side.

2. For the Image Pair content type I would like to have an option to randomize the matches and only display X number at time (similar to how Memory Game works when you set "Number of cards to use.")

Where can I find paid developers to help with customizations like this?

Ideally, the changes created could be added to the existing "official" content types. That would hopefully help others that would like this functionality. Is this something that is typically allowed? Is it possible to pay the mainter of these content type to make these changes?

Any help would be apprciated.

Thank you.

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UPDATE:

No developers responded, but I figured out how to change the Dialog Cards to remove the Turn button. I thought I would post the answer here in case it was useful to anyone else. 

Looking through the other forum posts here (yeah, I know, I'm suppose to do that first) it became clear that by using a Wordpress Hook I could easily make changes to the Content Types without distubing the underlying code (to allow to get updated versions of the Content Types with bug fixes, etc.).

So I downloaded the H5P Mod Wordpress plugin linked from this webpage which also has instructions for Drupal and Moodle: https://h5p.org/documentation/for-developers/visual-changes

I modified the H5P mod to just load the custom css file (general.css) and delted the rest of the mod. In the general.css file I added the following to not display the items I wanted removed:

.h5p-dialogcards .h5p-joubelui-button.h5p-dialogcards-turn {

  display: none;

}

.h5p-dialogcards .h5p-dialogcards-turn:before {

display: none;

}

I next uploaded the custom mod to Wordpress and activated it. Like magic those elements disapeared.

Now I just need to figure out my second question--- how to randomize the Image Pair content type and only display X number at a time. I'm hopeful this can be done in a similar way. Any information will be greatly appreciated.  If I figure it out I will post the solution here to hopefully help others.