How to add custom button in mobile creatio freedom ui , inside edit page/record page ?

Hi community , 

I find it a little difficult to figure out how to implement the freedom ui component configuration in my page, even if Creatio documentation lists it all:

 https://academy.creatio.com/docs/8.x/dev/development-on-creatio-platform/mobile-development/customization/freedom-ui/customize-page/references/common-components

The "UsrMobileUsrLeaveRequestRecordPageSettingsWorkplace2" client module is attached to this mobile page for a custom section that I designed called "UsrLeaveRequest."
How do I proceed about adding a custom button to this edit page now? 

[
    {
        "operation": "insert",
        "name": "settings",
        "values": {
            "entitySchemaName": "UsrLeaveRequest",
            "details": [],
            "columnSets": [],
            "localizableStrings": {
                "SocialMessageDetailCaptionUsrLeaveRequest_caption": "Feed",
                "AttachmentsDetailCaptionUsrLeaveRequest_caption": "Attachments",
                "primaryColumnSetUsrLeaveRequest_caption": "General information",
                "UsrEmployeV2_DetailStandardDetailUsrLeaveRequest_caption": "Employees detail"
            },
            "settingsType": "RecordPage",
            "operation": "insert",
 
        }
    },
    {
        "operation": "insert",
        "name": "SocialMessageDetailV2StandardDetail",
        "values": {
            "caption": "SocialMessageDetailCaptionUsrLeaveRequest_caption",
            "entitySchemaName": "SocialMessage",
            "showForVisibleModule": true,
            "filter": {
                "detailColumn": "EntityId",
                "masterColumn": "Id"
            },
            "operation": "insert"
        },
        "parentName": "settings",
        "propertyName": "details",
        "index": 0
    },
    {
        "operation": "insert",
        "name": "AttachmentsFlutterDetailStandardDetail",
        "values": {
            "caption": "AttachmentsDetailCaptionUsrLeaveRequest_caption",
            "entitySchemaName": "SysFile",
            "filter": {
                "detailColumn": "RecordId",
                "masterColumn": "Id"
            },
            "operation": "insert"
        },
        "parentName": "settings",
        "propertyName": "details",
        "index": 1
    },
    {
        "operation": "insert",
        "name": "UsrEmployeV2_DetailStandardDetail",
        "values": {
            "caption": "UsrEmployeV2_DetailStandardDetailUsrLeaveRequest_caption",
            "entitySchemaName": "Employee",
            "filter": {
                "detailColumn": "Manager",
                "masterColumn": "UsrApplicant"
            },
            "detailSchemaName": "UsrEmployeV2_Detail",
            "operation": "insert"
        },
        "parentName": "settings",
        "propertyName": "details",
        "index": 2
    },
    {
        "operation": "insert",
        "name": "primaryColumnSet",
        "values": {
            "items": [],
            "rows": 1,
            "entitySchemaName": "UsrLeaveRequest",
            "caption": "primaryColumnSetUsrLeaveRequest_caption",
            "position": 0,
            "operation": "insert"
        },
        "parentName": "settings",
        "propertyName": "columnSets",
        "index": 0
    },
    {
        "operation": "insert",
        "name": "42d4b33c-f361-44d4-92cd-07e8db664fca",
        "values": {
            "row": 0,
            "content": "Leave Request No.",
            "columnName": "UsrLeaveReaquestNo",
            "dataValueType": 1,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 0
    },
    {
        "operation": "insert",
        "name": "0d5ca981-1558-4e4d-b1a2-2b2b9dbd422c",
        "values": {
            "row": 1,
            "content": "End Date",
            "columnName": "UsrEndDate",
            "dataValueType": 8,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 1
    },
    {
        "operation": "insert",
        "name": "2013f978-c87f-4896-96be-5383cfd044e3",
        "values": {
            "row": 2,
            "content": "Start Date",
            "columnName": "UsrStartDate",
            "dataValueType": 8,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 2
    },
    {
        "operation": "insert",
        "name": "266417d3-f847-4386-af45-2674e9e779bb",
        "values": {
            "row": 3,
            "content": "Applicant",
            "columnName": "UsrApplicant",
            "dataValueType": 10,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 3
    },
    {
        "operation": "insert",
        "name": "1655829d-ce75-476c-9350-ce2696ecbf6d",
        "values": {
            "row": 5,
            "content": "Reason",
            "columnName": "UsrReason",
            "dataValueType": 1,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 4
    },
    {
        "operation": "insert",
        "name": "9f677f71-3322-4e75-9938-69ca4e1c650f",
        "values": {
            "row": 6,
            "content": "Status",
            "columnName": "UsrStatus",
            "dataValueType": 10,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 5
    },
    {
        "operation": "insert",
        "name": "3d874029-b467-4d7b-9eb0-d2ebfbe20403",
        "values": {
            "row": 7,
            "content": "Working Days Count",
            "columnName": "UsrWorkingDaysCount",
            "dataValueType": 4,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 6
    },
    {
        "operation": "insert",
        "name": "bc0d7d7e-ffdf-44a5-98b3-0a10094341e2",
        "values": {
            "row": 4,
            "content": "Applicant.Manager",
            "columnName": "UsrApplicant.Manager",
            "dataValueType": 10,
            "operation": "insert"
        },
        "parentName": "primaryColumnSet",
        "propertyName": "items",
        "index": 7
    }
]