You don’t need to enable anything in your site preferences for this. Its just part of multi-entity links.
First thing is to check that you do or do not have a shot/asset connection already setup.
If you are on your Assets page in list view, and you click on the fields box, do you see a “Shots” option?
If yes, then you should be good to go. Click on an asset to go to the details page for that assets.
Next question, you should see a list of tabs (Activity, Asset Info, Tasks, Versions, etc). I’m guessing you are missing a “Shots” tab since I don’t think SG includes this in their default templates?
To add one, click on the white page icon in the upper right corner and select “Design Page”.
In design mode, hit the “+ New Tab” option, enter a name of “Shots” (or whatever you think is appropriate) and choose the type “Shots”.
You should now see a Shots tab added to your list of tabs. If so, save the page.
Now in that shots tab, you can click on the fields button and you’ll find the “Asset-Specific Fields” section where you can add which ever fields you need.
I’m going based on a few assumptions here. Let me know if you hit any walls and I’ll elaborate more based on what happens.