It is difficult to offer guidance when you don't show what you have tried so far.
The DA is visible because they are global to the table and component and you need to restrict them to a view or experience when that is not wanted.
If your add button does nothing when you click it then make sure your action name matches the key in the payload definition. Also make sure you are using the correct configuration in your event mapping.
The component in PWS is labeled list - related. In my opinion you can check these easiest from the composition field on your sys_ux_macroponent record of the page your related list is on. To surface the correct target event you can set controller as Form or UI Controller Record Page
This should get the modal working, if it does not open the mra page correctly then you can check the payloads match the definition.
[
{
"name": "route",
"fieldType": "string",
"label": "Viewport modal - route",
"interfaceApiName": "",
"typeMetadata": null,
"mandatory": false,
"readOnly": false
},
{
"name": "fields",
"fieldType": "json",
"label": "Viewport modal - fields",
"interfaceApiName": "",
"typeMetadata": {
"schema": {
"type": "object"
}
},
"mandatory": false,
"readOnly": false
},
{
"name": "params",
"fieldType": "json",
"label": "Viewport modal - params (Optional)",
"interfaceApiName": "",
"typeMetadata": {
"schema": {
"type": "object"
}
},
"mandatory": false,
"readOnly": false
},
{
"name": "size",
"fieldType": "choice",
"label": "Modal size",
"typeMetadata": {
"choices": [
{
"label": "Small",
"value": "sm"
},
{
"label": "Medium",
"value": "md"
},
{
"label": "Large",
"value": "lg"
},
{
"label": "Fullscreen",
"value": "fullscreen"
}
]
},
"valueType": "string",
"mandatory": false,
"readOnly": false
},
{
"name": "ariaLabel",
"fieldType": "string",
"label": "Arial label",
"interfaceApiName": "",
"typeMetadata": null,
"mandatory": false,
"readOnly": false
}
]
