Hey Amritha_B ,
Something like this should work (atleast it does for me). Make sure the IDs and datasource names are correct.
 
export const dynamicElastiCubeSettings = {
    // If you would like to use URL params, modify here.
    urlParamName: 'data',
    // Default behavior uses dashboard OID as security object key.
    // Disabling this option uses dashboard titles as security object keys.
    configureByDashOID: true,
    // If enabled, throws errors in console. Disabled by default.
    throwErrors: false,
    // Mask data if error occurs. Disabled by default.
    maskDataOnError: false,
    // Confirms the server location of an ElastiCube.
    // Enable if your ElastiCubes migrate between servers.
    verifyECLocation: true,
    // // Example security definition structure
    // // dashboardOID: (or title if configureByDashOID disabled)
    // // { userGroupId: elastiCubeTitle, ... } ...
    security: {
        '63f23282c0ccfb1af49a1a14': { //dashboard id
            '63ca109c5ce6523bd0aa4043': { //group id
                dashboardDatasource: {
                    title: 'Org1',
                    address: 'LocalHost', // if the address doesn't exist, data source be chosen by default from localhost
                },
            },
            '63ca0d3e7dce523bc0545bff': { //group id
                dashboardDatasource: {
                    title: 'Org2',
                    address: 'LocalHost', // if the address doesn't exist, data source be chosen by default from localhost
                },
            }
        }
    },
    // Will take latest ElastiCube and set it as dataSource.
    selectMostRecent: false,
    // Roles for which ignore ElastiCube updates.
    mostRecentRolesBlackList: []
};